Submission #1284225

#	Time	Username	Problem	Language	Result	Execution time	Memory
1284225		ghammazhassan	Bliskost (COI23_bliskost)	C++20	100 / 100	114 ms	5776 KiB

Main

// #include <bits/stdc++.h>
#include <iostream>
#include <cmath>
#include <algorithm>
#include <map>
#include <unordered_map>
#include <vector>
#include <iomanip>
#include <string>
#include <queue>
#include <set>
#include <deque>
using namespace std;
#define int long long
#define endl "\n"
#define fi first
#define se second
const int M=26;
const int inf = 1e9;
const int LOG=17;
const int N=2e5+5;
int n , m , c , w , k , t=1 , q=1 , x , y , z , l , r;
void solve()
{   
    cin >> n >> q;
    string s,t;
    cin >> s >> t;
    c=0;
    for (int i=0;i<n;i++){
        if (i%2){
            c+=t[i]-s[i];
        }
        else{
            c+=s[i]-t[i];
        }
    }
    cout << (c%26==0 ? "da" : "ne") << endl;
    for (int j=0;j<q;j++){
        char p;cin >> x >> p;
        x--;
        if (x%2){
            c-=t[x]-s[x];
            s[x]=p;
            c+=t[x]-s[x];
        }
        else{
            c-=s[x]-t[x];
            s[x]=p;
            c+=s[x]-t[x];
        }
        cout << (c%26==0 ? "da" : "ne") << endl;
    }
}
signed main()    
{

    ios::sync_with_stdio(0);//DO NOT USE IN INTERACTIVE
    cin.tie(0), cout.tie(0);//DO NOT USE IN INTERACTIVE
    cout << fixed << setprecision(9);
    srand(time(0));
    // int t=1;
    // cin >> t;
    for (int _=1;_<=t;_++){
        solve();
        q++;
    }
} 

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