Submission #1093161

#	Time	Username	Problem	Language	Result	Execution time	Memory
1093161		Luvidi	Bliskost (COI23_bliskost)	C++17	100 / 100	115 ms	16360 KiB

Main

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

#define ll long long
#define pll pair<ll, ll>
#define pii pair<int, int>
#define fs first
#define sc second
#define pb push_back

void solve(){
    int n,q;
    cin>>n>>q;
    string s1,s2;
    cin>>s1>>s2;
    int s=0;
    for(int i=0;i<n;i++){
        if(i%2)s+=s1[i]-s2[i];
        else s+=s2[i]-s1[i];
    }
    if(s%26)cout<<"ne\n";
    else cout<<"da\n";
    while(q--){
        int x;
        char c;
        cin>>x>>c;
        x--;
        if(x%2)s-=s1[x]-s2[x];
        else s-=s2[x]-s1[x];
        s1[x]=c;
        if(x%2)s+=s1[x]-s2[x];
        else s+=s2[x]-s1[x];
        if(s%26)cout<<"ne\n";
        else cout<<"da\n";
    }
}

int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);

    solve();
}

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