Submission #1290877

#	Time	Username	Problem	Language	Result	Execution time	Memory
1290877		qweqer	Bliskost (COI23_bliskost)	C++20	0 / 100	1 ms	572 KiB

Main

#include <bits/stdc++.h>
#define FOR(i, beg, ed, etr) for(ll i = beg;i <= ed;i += etr)
#define all(x) x.begin(), x.end()
#define F first
#define pb push_back
#define S second
#define con continue
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pii;
typedef pair<ll,ll> pll;
typedef double db;
typedef long double ld;

const ll inf = 1e9;
const ll INF = 1e18;
const ll N = 3e6;
const ll MOD = 1e9 + 7;
ll a[N],b[N];
void solve(){
    int n,q ;cin >> n >> q;
    int x = 0;
    FOR(i, 1, n , 1){
        char c;cin >> c;
        a[i] = (c - 'a' + 1);
        if(i == n)x += a[i];
        else if((n - i) % 2 == 0){
            x += (a[i] - 1);
        }
        else{
            x -= (a[i] - 1);
        }
    }
    int y = 0;
    FOR(i, 1, n,  1){
        char c;cin >> c;
        b[i] = (c - 'a' + 1);
        if(i == n)y += b[i];
        else if((n - i) % 2 == 0){
            y += (b[i] - 1);
        }
        else{
            y -= (b[i] - 1);
        }
    }
    if((x % 26) == (y % 26)){
        cout << "da\n";
    }
    else cout << "ne\n";
    while(q--){
        int pos;
        char c;cin >> pos>>c;
        if(n == pos){
            x -= a[pos];
        }
        else if((n - pos) % 2 == 0){
            x -= (a[pos] - 1);
        }
        else{
            x += (a[pos] - 1);
        }
        a[pos] = (c - 'a' + 1);
        if(n == pos){
            x += a[pos];
        }
        else if((n - pos) % 2 == 0){
            x += (a[pos] - 1);
        }
        else{
            x -= (a[pos] - 1);
        }
        if((x % 26) == (y % 26)){
            cout << "da\n";
        }
        else cout << "ne\n";
    }
}
main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll abd = 1;
//    cin >> abd;

    FOR(i, 1, abd, 1){
        solve();
    }
}

Compilation message (stderr)

Main.cpp:78:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   78 | main(){
      | ^~~~

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