제출 #654950

#제출 시각아이디문제언어결과실행 시간메모리
654950lunchbox1Genetics (BOI18_genetics)C++17
100 / 100
141 ms36316 KiB
/* Genetics https://oj.uz/problem/view/BOI18_genetics */ #include <bits/stdc++.h> #include <ext/random> using namespace std; const int N = 4100; int h[256]; __gnu_cxx::sfmt19937 rng(1234); int main() { ios::sync_with_stdio(0), cin.tie(0); h['A'] = 0, h['C'] = 1, h['G'] = 2, h['T'] = 3; int n, m, k; cin >> n >> m >> k; static string s[N]; static long long v[N], f[N][4]; long long u = 0; for (int i = 0; i < n; i++) { cin >> s[i], v[i] = rng(), u += v[i]; for (int j = 0; j < m; j++) f[j][h[(int) s[i][j]]] += v[i]; } for (int i = 0; i < n; i++) { long long t = 0; for (int j = 0; j < m; j++) t += f[j][h[(int) s[i][j]]] - v[i]; if (t == 1LL * (u - v[i]) * (m - k)) { cout << i + 1 << '\n'; return 0; } } assert(false); return 0; }
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