Submission #1189439

#	Time	Username	Problem	Language	Result	Execution time	Memory
1189439		mychecksedad	Bliskost (COI23_bliskost)	C++20	100 / 100	102 ms	5856 KiB

Main

/* Author : Mychecksdead  */
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define pb push_back
#define all(x) x.begin(), x.end()
#define en cout << '\n'
#define ff first
#define ss second
#define pii pair<int,int>
#define vi vector<int>
const int N = 1e6+100, M = 1e5+10, K = 52, MX = 30;


int n, q;
string s, t;
int sum1 = 0, sum2 = 0;
void ans(){
  sum1%=26;
  sum1+=26;
  sum1%=26;
  sum2%=26;
  sum2+=26;
  sum2%=26;
  if(sum1==sum2) cout << "da\n";
  else cout << "ne\n";
}
void solve(){
  cin >> n >> q >> s >> t;
  int e = 1;
  for(char c: s) {sum1 += (c-'a')*e; e*=-1;}
  e=1;
  for(char c: t) {sum2 += (c-'a')*e; e*=-1;}
  ans();
  for(int i = 1; i <= q; ++i){
    int p; char c; cin >> p >> c;
    --p;
    sum1 -= (s[p]-'a')*(p%2==0?1:-1);
    s[p] = c;
    sum1 += (s[p]-'a')*(p%2==0?1:-1);
    ans();
  }
}


int main(){
  cin.tie(0); ios::sync_with_stdio(0);
  int tt = 1, aa;
  // freopen("in.txt", "r", stdin);
  // freopen("out.txt", "w", stdout);
  while(tt--){
    solve();
  }
  cerr<<"time taken : "<<(float)clock()/CLOCKS_PER_SEC<<" seconds\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: 43 / 43