Submission #1309689

#	Time	Username	Problem	Language	Result	Execution time	Memory
1309689		quollcucumber`	Bliskost (COI23_bliskost)	C++20	0 / 100	1 ms	568 KiB

Main

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

signed main(){
    int n, q;
    cin >> n >> q;
    string a, b;
    cin >> a >> b;
    if(n == 1) {
        // assert(1==2);
        if(a == b) {
            cout<<"da\n";
        }else {
            cout<<"ne\n";
        }
        for(int i = 0; i < q; i++) {
            int pos;
            char c;
            cin >> pos >> c;
            a[pos-1] = c;
            if(a == b) {
                cout<<"da\n";
            }else {
                cout<<"ne\n";
            }
        }
    }else if(n == 2) {
        // assert(1==2);
        bool works = false;
        for(int i = 0; i < 26; i++) {
            if(a[0] + i == b[0] && a[1] + i == b[1]) {
                works = true;
            }
        }
        if(works) {
            cout<<"da\n";
        }else {
            cout<<"na\n";
        }
        for(int j = 0; j < q; j++) {
            int pos;
            char c;
            cin >> pos >> c;
            a[pos-1] = c;
            works = false;
            for(int i = 0; i < 26; i++) {
                if(a[0] + i == b[0] && a[1] + i == b[1]) {
                    works = true;
                }
            }
            if(works) {
                cout<<"da\n";
            }else {
                cout<<"na\n";
            }
        }
    }else {
        int moda = 0, modb = 0;
        for(char i : a) {
            moda += i - 'a';
            moda%= 2;
        }
        for(char i : b) {
            modb += i - 'a';
            modb %= 2;
        }
        if(moda == modb) {
            cout<<"da\n";
        }else {
            cout<<"ne\n";
        }
        for(int i = 0; i < q; i++) {
            int pos;
            char c;
            cin >> pos >> c;
            if((a[pos-1] - 'a') % 2 != (c - 'a') % 2) {
                moda = 1 ^ moda;
            }
            a[pos-1] = c;
            if(moda == modb) {
                cout<<"da\n";
            }else {
                cout<<"ne\n";
            }
        }
    }
    return 0;
}

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