# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1026455 | vjudge1 | Bliskost (COI23_bliskost) | C++17 | 2 ms | 604 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
#define int long long
void f(){
#ifndef ONLINE_JUDGE
freopen("in.txt", "r", stdin);
freopen("out.txt", "w", stdout);
#endif
}
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
f();
int n, q; cin >>n >> q;
vector<int> a(n);
int sb=0, sa=0;
string s, t; cin >> s>> t;
for(int i=0; i<n; i++){
if((s[i]-'a')%2) sa++, a[i]=1;
if((t[i]-'a')%2) sb++;
}
if(sa%2!=sb%2) cout<<"ne"<<"\n";
else cout<<"da"<<"\n";
while(q--){
int p; cin >> p; p--;
char x; cin >> x; x--;
x-='a';
if(x%2!=a[p]){
sa++;
a[p]^=1;
}
if(sa%2!=sb%2) cout<<"ne"<<"\n";
else cout<<"da"<<"\n";
}
}
Compilation message (stderr)
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