diff --git a/atcoder/abc118c.cpp b/atcoder/abc118c.cpp
new file mode 100644
index 0000000..d591a9a
--- /dev/null
+++ b/atcoder/abc118c.cpp
@@ -0,0 +1,56 @@
+#define _CRT_SECURE_NO_WARNINGS
+#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
+#include <bits/stdc++.h>
+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;
+template <typename T>
+using enable_if_arithmetic = typename enable_if<is_arithmetic<T>::value>::type;
+template <typename T>
+using enable_if_integral = typename enable_if<is_integral<T>::value>::type;
+inline char getchar(int)
+{
+    static char buf[64 << 20], *S = buf, *T = buf;
+    if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + S;
+    return S == T ? EOF : *S++;
+}
+template <typename T, typename = enable_if_integral<T>>
+inline void read(T &x)
+{
+    int ch = x = 0, f = 1;
+    while (!isdigit(ch = getchar()))
+        if (ch == '-') f = -1;
+    for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
+    x *= f;
+}
+template <typename T, typename... Args, typename = enable_if_integral<T>>
+inline void read(T &x, Args &... args) { read(x), read(args...); }
+ll gcd(ll a, ll b) { return b == 0 ? a : gcd(b, a % b); }
+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;
+}
+constexpr double eps = 1e-8;
+inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }
+int main()
+{
+    int n, x, r;
+    read(n, r);
+    for (int i = 1; i < n; i++) read(x), r = gcd(x, r);
+    printf("%d", r);
+    return 0;
+}
\ No newline at end of file
diff --git a/atcoder/abc119c.cpp b/atcoder/abc119c.cpp
new file mode 100644
index 0000000..96a684d
--- /dev/null
+++ b/atcoder/abc119c.cpp
@@ -0,0 +1,78 @@
+#define _CRT_SECURE_NO_WARNINGS
+#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
+#include <bits/stdc++.h>
+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;
+template <typename T>
+using enable_if_arithmetic = typename enable_if<is_arithmetic<T>::value>::type;
+template <typename T>
+using enable_if_integral = typename enable_if<is_integral<T>::value>::type;
+inline char getchar(int)
+{
+    static char buf[64 << 20], *S = buf, *T = buf;
+    if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + S;
+    return S == T ? EOF : *S++;
+}
+template <typename T, typename = enable_if_integral<T>>
+inline void read(T &x)
+{
+    int ch = x = 0, f = 1;
+    while (!isdigit(ch = getchar()))
+        if (ch == '-') f = -1;
+    for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
+    x *= f;
+}
+template <typename T, typename... Args, typename = enable_if_integral<T>>
+inline void read(T &x, Args &... args) { read(x), read(args...); }
+ll gcd(ll a, ll b) { return b == 0 ? a : gcd(b, a % b); }
+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;
+}
+constexpr double eps = 1e-8;
+inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }
+int l[10];
+int st[10];
+int main()
+{
+    int n, A, B, C, ans = INT_MAX;
+    read(n, A, B, C);
+    for (int i = 0; i < n; i++) read(l[i]);
+    for (int i = 0; i < (1 << (n << 1)); i++)
+    {
+        for (int j = 0; j < n; j++) st[j] = i >> (j << 1) & 3;
+        int a = 0, b = 0, c = 0;
+        int ca = 0, cb = 0, cc = 0;
+        for (int j = 0; j < n; j++) switch (st[j])
+            {
+            case 1:
+                a += l[j], ca++;
+                break;
+            case 2:
+                b += l[j], cb++;
+                break;
+            case 3:
+                c += l[j], cc++;
+                break;
+            }
+        if (!ca || !cb || !cc) continue;
+        ans = min(ans, abs(A - a) + abs(B - b) + abs(C - c) + 10 * (ca + cb + cc - 3));
+    }
+    printf("%d", ans);
+    return 0;
+}
\ No newline at end of file
diff --git a/atcoder/abc120c.cpp b/atcoder/abc120c.cpp
new file mode 100644
index 0000000..3a8ca92
--- /dev/null
+++ b/atcoder/abc120c.cpp
@@ -0,0 +1,56 @@
+#define _CRT_SECURE_NO_WARNINGS
+#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
+#include <bits/stdc++.h>
+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;
+template <typename T>
+using enable_if_arithmetic = typename enable_if<is_arithmetic<T>::value>::type;
+template <typename T>
+using enable_if_integral = typename enable_if<is_integral<T>::value>::type;
+inline char getchar(int)
+{
+    static char buf[64 << 20], *S = buf, *T = buf;
+    if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + S;
+    return S == T ? EOF : *S++;
+}
+template <typename T, typename = enable_if_integral<T>>
+inline void read(T &x)
+{
+    int ch = x = 0, f = 1;
+    while (!isdigit(ch = getchar()))
+        if (ch == '-') f = -1;
+    for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
+    x *= f;
+}
+template <typename T, typename... Args, typename = enable_if_integral<T>>
+inline void read(T &x, Args &... args) { read(x), read(args...); }
+ll gcd(ll a, ll b) { return b == 0 ? a : gcd(b, a % b); }
+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;
+}
+constexpr double eps = 1e-8;
+inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }
+int main()
+{
+    string s;
+    cin >> s;
+    u64 zc = count(s.begin(), s.end(), '0');
+    cout << (min(zc, s.size() - zc) << 1);
+    return 0;
+}
\ No newline at end of file