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31 lines
728 B
C++
31 lines
728 B
C++
#define _CRT_SECURE_NO_WARNINGS
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#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
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#include <bits/stdc++.h>
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using namespace std;
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const int N = 1e7 + 50;
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char str[N], tmp[N >> 4];
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int main()
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{
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int T, n, L, R;
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scanf("%d", &T);
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while (T--)
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{
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scanf("%d%d", &L, &R);
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for (int i = L; i <= R; i++)
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{
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itoa(i, tmp, 2);
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strcat(str, tmp);
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}
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int len = strlen(str);
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int ans = 0;
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for (int i = 0; i < len; i++)
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{
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if (memcmp(str + i, "010", 3) == 0) ans += 2;
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if (memcmp(str + i, "101", 3) == 0) ans += 3;
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}
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printf("%d ", ans);
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puts(str);
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}
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return 0;
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}
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