diff --git a/.gitignore b/.gitignore
index ed338e9..067780f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -583,7 +583,7 @@ acs-*.bib
 #(r)(e)ledmac/(r)(e)ledpar
 *.end
 *.?end
-*.[1-9]
+#*.[1-9]
 *.[1-9][0-9]
 *.[1-9][0-9][0-9]
 *.[1-9]R
diff --git a/.wakatime-project b/.wakatime-project
new file mode 100644
index 0000000..5fd3436
--- /dev/null
+++ b/.wakatime-project
@@ -0,0 +1 @@
+Noisy Shadow 59
\ No newline at end of file
diff --git a/Article6/1.2/1328.cpp b/Article6/1.2/1328.cpp
new file mode 100644
index 0000000..1219f4f
--- /dev/null
+++ b/Article6/1.2/1328.cpp
@@ -0,0 +1,142 @@
+#define _CRT_SECURE_NO_WARNINGS
+#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
+#ifdef ONLINE_JUDGE
+#include <algorithm>
+#include <bitset>
+#include <cctype>
+#include <cerrno>
+#include <cfloat>
+#include <ciso646>
+#include <climits>
+#include <clocale>
+#include <cmath>
+#include <complex>
+#include <csetjmp>
+#include <csignal>
+#include <cstdarg>
+#include <cstddef>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+#include <cwchar>
+#include <cwctype>
+#include <deque>
+#include <exception>
+#include <fstream>
+#include <functional>
+#include <iomanip>
+#include <ios>
+#include <iosfwd>
+#include <iostream>
+#include <istream>
+#include <iterator>
+#include <limits>
+#include <list>
+#include <locale>
+#include <map>
+#include <memory>
+#include <new>
+#include <numeric>
+#include <ostream>
+#include <queue>
+#include <set>
+#include <sstream>
+#include <stack>
+#include <stdexcept>
+#include <streambuf>
+#include <string>
+#include <typeinfo>
+#include <utility>
+#include <valarray>
+#include <vector>
+typedef long long int64_t;
+typedef unsigned long long uint64_t;
+#else
+#include <bits/stdc++.h>
+#endif
+using namespace std;
+#define CRP(t, x) const t &x
+#define OPX(op, t, x) operator op(CRP(t, x))
+#define OPL(t, x) bool OPX(<, t, x) const
+#define FIL(x, v) memset(x, v, sizeof(x))
+#define CLR(x) FIL(x, 0)
+#define NE1(x) FIL(x, -1)
+#define INF(x) FIL(x, 0x3f)
+#ifndef _DEBUG
+#define _DEBUG 0
+#endif // !_DEBUG
+#define IFD if (_DEBUG)
+typedef int64_t ll, i64;
+typedef uint64_t ull, u64;
+inline char getchar(int)
+{
+    static char buf[64 << 20], *S = buf, *T = buf;
+    if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + buf;
+    return S == T ? EOF : *S++;
+}
+template <typename T>
+inline bool read(T &x)
+{
+    int ch = x = 0, f = 1;
+    while (!isdigit(ch = getchar()))
+        if (ch == EOF)
+            return false;
+        else if (ch == '-')
+            f = 0;
+    for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
+    return x = f ? x : -x, true;
+}
+template <typename T1, typename T2>
+inline bool read(T1 &v1, T2 &v2) { return read(v1) && read(v2); }
+template <typename T1, typename T2, typename T3>
+inline bool read(T1 &v1, T2 &v2, T3 &v3) { return read(v1) && read(v2) && read(v3); }
+template <typename T1, typename T2, typename T3, typename T4>
+inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4) { return read(v1) && read(v2) && read(v3) && read(v4); }
+template <typename T1, typename T2, typename T3, typename T4, typename T5>
+inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5) { return read(v1) && read(v2) && read(v3) && read(v4) && read(v5); }
+inline ll gcd(ll a, ll b)
+{
+    for (; b; swap(a, b)) a %= b;
+    return a;
+}
+inline ll fpow(ll a, ll b, ll m)
+{
+    ll r = 1;
+    for (; b; b >>= 1, a = a * a % m)
+        if (b & 1) r = r * a % m;
+    return r;
+}
+const double eps = 1e-8;
+inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }
+inline double sq(double x) { return x * x; }
+pair<double, double> a[1050];
+int main()
+{
+    for (ll n, d, t = 0; read(n, d), n | d;)
+    {
+        bool flag = false;
+        for (int i = 0; i < n; i++)
+        {
+            read(a[i].first, a[i].second);
+            if (a[i].second > d) flag = true;
+            double len = sqrt(abs(sq(d) - sq(a[i].second)));
+            a[i].second = a[i].first + len;
+            a[i].first = a[i].first - len;
+        }
+        sort(a, a + n);
+        double lastPos = -1e80;
+        int ans = 0;
+        for (int i = 0; i < n; i++)
+        {
+            if (a[i].first > lastPos) lastPos = a[i].second, ans++;
+            if (a[i].second < lastPos) lastPos = a[i].second;
+        }
+        printf("Case %d: ", ++t);
+        if (flag)
+            puts("-1");
+        else
+            printf("%d\n", ans);
+    }
+    return 0;
+}
\ No newline at end of file
diff --git a/Article6/1.2/2109.cpp b/Article6/1.2/2109.cpp
new file mode 100644
index 0000000..bd2cd58
--- /dev/null
+++ b/Article6/1.2/2109.cpp
@@ -0,0 +1,116 @@
+#define _CRT_SECURE_NO_WARNINGS
+#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
+#ifdef ONLINE_JUDGE
+#include <algorithm>
+#include <bitset>
+#include <cctype>
+#include <cerrno>
+#include <cfloat>
+#include <ciso646>
+#include <climits>
+#include <clocale>
+#include <cmath>
+#include <complex>
+#include <csetjmp>
+#include <csignal>
+#include <cstdarg>
+#include <cstddef>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+#include <cwchar>
+#include <cwctype>
+#include <deque>
+#include <exception>
+#include <fstream>
+#include <functional>
+#include <iomanip>
+#include <ios>
+#include <iosfwd>
+#include <iostream>
+#include <istream>
+#include <iterator>
+#include <limits>
+#include <list>
+#include <locale>
+#include <map>
+#include <memory>
+#include <new>
+#include <numeric>
+#include <ostream>
+#include <queue>
+#include <set>
+#include <sstream>
+#include <stack>
+#include <stdexcept>
+#include <streambuf>
+#include <string>
+#include <typeinfo>
+#include <utility>
+#include <valarray>
+#include <vector>
+typedef long long int64_t;
+typedef unsigned long long uint64_t;
+#else
+#include <bits/stdc++.h>
+#endif
+using namespace std;
+#define CRP(t, x) const t &x
+#define OPX(op, t, x) operator op(CRP(t, x))
+#define OPL(t, x) bool OPX(<, t, x) const
+#define FIL(x, v) memset(x, v, sizeof(x))
+#define CLR(x) FIL(x, 0)
+#define NE1(x) FIL(x, -1)
+#define INF(x) FIL(x, 0x3f)
+#ifndef _DEBUG
+#define _DEBUG 0
+#endif // !_DEBUG
+#define IFD if (_DEBUG)
+typedef int64_t ll, i64;
+typedef uint64_t ull, u64;
+inline char getchar(int)
+{
+    static char buf[64 << 20], *S = buf, *T = buf;
+    if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + buf;
+    return S == T ? EOF : *S++;
+}
+template <typename T>
+inline bool read(T &x)
+{
+    int ch = x = 0, f = 1;
+    while (!isdigit(ch = getchar()))
+        if (ch == EOF)
+            return false;
+        else if (ch == '-')
+            f = 0;
+    for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
+    return x = f ? x : -x, true;
+}
+template <typename T1, typename T2>
+inline bool read(T1 &v1, T2 &v2) { return read(v1) && read(v2); }
+template <typename T1, typename T2, typename T3>
+inline bool read(T1 &v1, T2 &v2, T3 &v3) { return read(v1) && read(v2) && read(v3); }
+template <typename T1, typename T2, typename T3, typename T4>
+inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4) { return read(v1) && read(v2) && read(v3) && read(v4); }
+template <typename T1, typename T2, typename T3, typename T4, typename T5>
+inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5) { return read(v1) && read(v2) && read(v3) && read(v4) && read(v5); }
+inline ll gcd(ll a, ll b)
+{
+    for (; b; swap(a, b)) a %= b;
+    return a;
+}
+inline ll fpow(ll a, ll b, ll m)
+{
+    ll r = 1;
+    for (; b; b >>= 1, a = a * a % m)
+        if (b & 1) r = r * a % m;
+    return r;
+}
+const double eps = 1e-8;
+inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }
+int main()
+{
+    for (double n, p; read(n, p);) printf("%.0f\n", pow(p, 1 / n));
+    return 0;
+}
\ No newline at end of file
diff --git a/Article6/1.2/2586.cpp b/Article6/1.2/2586.cpp
new file mode 100644
index 0000000..eeec7d8
--- /dev/null
+++ b/Article6/1.2/2586.cpp
@@ -0,0 +1,133 @@
+#define _CRT_SECURE_NO_WARNINGS
+#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
+#ifdef ONLINE_JUDGE
+#include <algorithm>
+#include <bitset>
+#include <cctype>
+#include <cerrno>
+#include <cfloat>
+#include <ciso646>
+#include <climits>
+#include <clocale>
+#include <cmath>
+#include <complex>
+#include <csetjmp>
+#include <csignal>
+#include <cstdarg>
+#include <cstddef>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+#include <cwchar>
+#include <cwctype>
+#include <deque>
+#include <exception>
+#include <fstream>
+#include <functional>
+#include <iomanip>
+#include <ios>
+#include <iosfwd>
+#include <iostream>
+#include <istream>
+#include <iterator>
+#include <limits>
+#include <list>
+#include <locale>
+#include <map>
+#include <memory>
+#include <new>
+#include <numeric>
+#include <ostream>
+#include <queue>
+#include <set>
+#include <sstream>
+#include <stack>
+#include <stdexcept>
+#include <streambuf>
+#include <string>
+#include <typeinfo>
+#include <utility>
+#include <valarray>
+#include <vector>
+typedef long long int64_t;
+typedef unsigned long long uint64_t;
+#else
+#include <bits/stdc++.h>
+#endif
+using namespace std;
+#define CRP(t, x) const t &x
+#define OPX(op, t, x) operator op(CRP(t, x))
+#define OPL(t, x) bool OPX(<, t, x) const
+#define FIL(x, v) memset(x, v, sizeof(x))
+#define CLR(x) FIL(x, 0)
+#define NE1(x) FIL(x, -1)
+#define INF(x) FIL(x, 0x3f)
+#ifndef _DEBUG
+#define _DEBUG 0
+#endif // !_DEBUG
+#define IFD if (_DEBUG)
+typedef int64_t ll, i64;
+typedef uint64_t ull, u64;
+inline char getchar(int)
+{
+    static char buf[64 << 20], *S = buf, *T = buf;
+    if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + buf;
+    return S == T ? EOF : *S++;
+}
+template <typename T>
+inline bool read(T &x)
+{
+    int ch = x = 0, f = 1;
+    while (!isdigit(ch = getchar()))
+        if (ch == EOF)
+            return false;
+        else if (ch == '-')
+            f = 0;
+    for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
+    return x = f ? x : -x, true;
+}
+template <typename T1, typename T2>
+inline bool read(T1 &v1, T2 &v2) { return read(v1) && read(v2); }
+template <typename T1, typename T2, typename T3>
+inline bool read(T1 &v1, T2 &v2, T3 &v3) { return read(v1) && read(v2) && read(v3); }
+template <typename T1, typename T2, typename T3, typename T4>
+inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4) { return read(v1) && read(v2) && read(v3) && read(v4); }
+template <typename T1, typename T2, typename T3, typename T4, typename T5>
+inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5) { return read(v1) && read(v2) && read(v3) && read(v4) && read(v5); }
+inline ll gcd(ll a, ll b)
+{
+    for (; b; swap(a, b)) a %= b;
+    return a;
+}
+inline ll fpow(ll a, ll b, ll m)
+{
+    ll r = 1;
+    for (; b; b >>= 1, a = a * a % m)
+        if (b & 1) r = r * a % m;
+    return r;
+}
+const double eps = 1e-8;
+inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }
+int main()
+{
+    for (int s, d; read(s, d);)
+    {
+        int ans = 0;
+        if (4 * s < d)
+            ans = 10 * s - 2 * d;
+        else if (3 * s < 2 * d)
+            ans = 8 * s - 4 * d;
+        else if (2 * s < 3 * d)
+            ans = 6 * s - 6 * d;
+        else if (s < 4 * d)
+            ans = 3 * s - 9 * d;
+        else
+            ans = -1;
+        if (ans < 0)
+            puts("Deficit");
+        else
+            printf("%d\n", ans);
+    }
+    return 0;
+}
\ No newline at end of file
diff --git a/Article6/1.5/3295.cpp b/Article6/1.5/3295.cpp
new file mode 100644
index 0000000..596c67d
--- /dev/null
+++ b/Article6/1.5/3295.cpp
@@ -0,0 +1,154 @@
+#define _CRT_SECURE_NO_WARNINGS
+#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
+#ifdef ONLINE_JUDGE
+#include <algorithm>
+#include <bitset>
+#include <cctype>
+#include <cerrno>
+#include <cfloat>
+#include <ciso646>
+#include <climits>
+#include <clocale>
+#include <cmath>
+#include <complex>
+#include <csetjmp>
+#include <csignal>
+#include <cstdarg>
+#include <cstddef>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+#include <cwchar>
+#include <cwctype>
+#include <deque>
+#include <exception>
+#include <fstream>
+#include <functional>
+#include <iomanip>
+#include <ios>
+#include <iosfwd>
+#include <iostream>
+#include <istream>
+#include <iterator>
+#include <limits>
+#include <list>
+#include <locale>
+#include <map>
+#include <memory>
+#include <new>
+#include <numeric>
+#include <ostream>
+#include <queue>
+#include <set>
+#include <sstream>
+#include <stack>
+#include <stdexcept>
+#include <streambuf>
+#include <string>
+#include <typeinfo>
+#include <utility>
+#include <valarray>
+#include <vector>
+typedef long long int64_t;
+typedef unsigned long long uint64_t;
+#else
+#include <bits/stdc++.h>
+#endif
+using namespace std;
+#define CRP(t, x) const t &x
+#define OPX(op, t, x) operator op(CRP(t, x))
+#define OPL(t, x) bool OPX(<, t, x) const
+#define FIL(x, v) memset(x, v, sizeof(x))
+#define CLR(x) FIL(x, 0)
+#define NE1(x) FIL(x, -1)
+#define INF(x) FIL(x, 0x3f)
+#ifndef _DEBUG
+#define _DEBUG 0
+#endif // !_DEBUG
+#define IFD if (_DEBUG)
+typedef int64_t ll, i64;
+typedef uint64_t ull, u64;
+inline char getchar(int)
+{
+    static char buf[64 << 20], *S = buf, *T = buf;
+    if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + buf;
+    return S == T ? EOF : *S++;
+}
+template <typename T>
+inline bool read(T &x)
+{
+    int ch = x = 0, f = 1;
+    while (!isdigit(ch = getchar()))
+        if (ch == EOF)
+            return false;
+        else if (ch == '-')
+            f = 0;
+    for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
+    return x = f ? x : -x, true;
+}
+template <typename T1, typename T2>
+inline bool read(T1 &v1, T2 &v2) { return read(v1) && read(v2); }
+template <typename T1, typename T2, typename T3>
+inline bool read(T1 &v1, T2 &v2, T3 &v3) { return read(v1) && read(v2) && read(v3); }
+template <typename T1, typename T2, typename T3, typename T4>
+inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4) { return read(v1) && read(v2) && read(v3) && read(v4); }
+template <typename T1, typename T2, typename T3, typename T4, typename T5>
+inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5) { return read(v1) && read(v2) && read(v3) && read(v4) && read(v5); }
+inline ll gcd(ll a, ll b)
+{
+    for (; b; swap(a, b)) a %= b;
+    return a;
+}
+inline ll fpow(ll a, ll b, ll m)
+{
+    ll r = 1;
+    for (; b; b >>= 1, a = a * a % m)
+        if (b & 1) r = r * a % m;
+    return r;
+}
+const double eps = 1e-8;
+inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }
+char str[205];
+int stk[205], top;
+int main()
+{
+    while (scanf("%s", str), *str - '0')
+    {
+        int len = strlen(str);
+        bool flag = true;
+        for (int st = 0; st < 32 && flag; st++)
+        {
+            top = 0;
+            for (int i = len - 1; i >= 0; i--)
+                if (islower(str[i]))
+                    stk[top++] = st >> (str[i] - 'p') & 1;
+                else
+                    switch (str[i])
+                    {
+                    case 'K':
+                        top--;
+                        stk[top - 1] = stk[top] && stk[top - 1];
+                        break;
+                    case 'A':
+                        top--;
+                        stk[top - 1] = stk[top] || stk[top - 1];
+                        break;
+                    case 'C':
+                        top--;
+                        stk[top - 1] = !stk[top - 1] || stk[top];
+                        break;
+                    case 'E':
+                        top--;
+                        stk[top - 1] = stk[top] == stk[top - 1];
+                        break;
+                    case 'N':
+                        stk[top - 1] = !stk[top - 1];
+                        break;
+                    }
+            if (top != 1 || *stk == 0) flag = false;
+        }
+        puts(flag ? "tautology" : "not");
+    }
+    return 0;
+}
\ No newline at end of file