oj.uz

Submission #922791

# Submission time Handle Problem Language Result Execution time Memory
922791 2024-02-06T06:35:22 Z phoenix0423 Remittance (JOI19_remittance) C++17
0 / 100
 1 ms 348 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pll;
#define fastio ios::sync_with_stdio(false), cin.tie(0)
#define pb push_back
#define eb emplace_back
#define f first
#define s second
#define int long long
const int INF = 1e12;

signed main(void){
    fastio;
    int n;
    cin>>n;
    vector<int> a(n);
    for(int i = 0; i < n; i++){
        int x, y;
        cin>>x>>y;
        a[i] = x - y;
    }
    for(int i = 0; i < n; i++){
        if(a[i] > 0 && a[i] % 2){
            int nd = 2;
            int id = (i - 1 + n) % n;
            while(id != i && a[id] < nd && nd < INF){
                nd -= a[id], a[id] = 0;
                nd *= 2;
                id = (id - 1 + n) % n;
            }
            if(a[id] < nd){
                cout<<"No\n";
                return 0;
            }
            a[id] -= nd;
            a[i] ++;
        }
    }
    for(int i = 0; i < n; i++){
        if(a[i] < 0){
            int nd = - a[i] * 2;
            int id = (i - 1 + n) % n;
            while(id != i && a[id] < nd && nd < INF){
                nd -= a[id], a[id] = 0;
                nd *= 2;
                id = (id - 1 + n) % n;
            }
            if(a[id] < nd){
                cout<<"No\n";
                return 0;
            }
            a[id] -= nd;
            a[i] = 0;
        }
    }
    for(auto x : a){
        if(x){
            cout<<"No\n";
            return 0;
        }
    }
    cout<<"Yes\n";
}

Subtask #1
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Incorrect 1 ms 348 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Incorrect 1 ms 348 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #3
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Incorrect 1 ms 348 KB Output isn't correct
9 Halted 0 ms 0 KB -