제출 #1212081

#제출 시각아이디문제언어결과실행 시간메모리
1212081rhm_ganBliskost (COI23_bliskost)C++20
0 / 100
0 ms320 KiB
#include <bits/stdc++.h> using namespace std; #ifdef LOCAL #include "debug.h" #else #define dbg(...) 42 #endif int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int n, q; cin >> n >> q; string a, b; cin >> a >> b; int ax = 0, ay = 0; int bx = 0, by = 0; for (int i = 0; i < n; i++) { if (i & 1) { ax += a[i]; bx += b[i]; } else { ay += a[i]; by += b[i]; } } if ((ax - bx) % 26 == (ay - by) % 26) { cout << "da\n"; } else { cout << "ne\n"; } while (q--) { int i; char c; cin >> i >> c; i--; if (i & 1) { ax = ax - a[i] + c; } else { ay = ay - a[i] + c; } a[i] = c; if ((ax - bx) % 26 == (ay - by) % 26) { cout << "da\n"; } else { cout << "ne\n"; } } return 0; }
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