Submission #954461

#	Time	Username	Problem	Language	Result	Execution time	Memory
954461		GrandTiger1729	Bliskost (COI23_bliskost)	C++17	57 / 100	1096 ms	8800 KiB

Main

#include <bits/stdc++.h>
using namespace std;

const int K = 26;
int main()
{
    cin.tie(0)->sync_with_stdio(0);
    int n, q;
    cin >> n >> q;
    string a, b;
    cin >> a >> b;
    vector<int> c(n);
    for (int i = 0; i < n; i++)
    {
        c[i] = (b[i] - a[i] + K) % K;
    }
    int cur = 0;
    for (int i = 0; i < n; i++)
    {
        cur = c[i] - cur;
    }
    cur %= K;
    cout << (cur == 0 ? "da" : "ne") << '\n';
    while (q--)
    {
        int j;
        char x;
        cin >> j >> x;
        j--;
        a[j] = x;
        c[j] = (b[j] - a[j] + K) % K;
        cur = 0;
        for (int i = 0; i < n; i++)
        {
            cur = c[i] - cur;
        }
        cur %= K;
        cout << (cur == 0 ? "da" : "ne") << '\n';
    }
    return 0;
}

• Subtask 1: 7 / 7
• Subtask 2: 8 / 8
• Subtask 3: 13 / 13
• Subtask 4: 12 / 12
• Subtask 5: 17 / 17
• Subtask 6: 0 / 43