Submission #1242048

#	Time	Username	Problem	Language	Result	Execution time	Memory
1242048		thangdz2k7	Remittance (JOI19_remittance)	C++20	100 / 100	166 ms	8264 KiB

remittance

#include <bits/stdc++.h>

using namespace std;

void process(){
    int n; cin >> n;
    vector <int> A(n), B(n);
    for (int i = 0; i < n; ++ i) 
        cin >> A[i] >> B[i];

    for (int loops = 0; loops < 32; ++ loops) {
        for (int i = 0; i < n; ++ i){
            if (A[i] > B[i]){
                int to = (A[i] - B[i]);
                if ((to & 1) && (to + 1) <= A[i]) to ++;
                int tmp = to / 2;
                A[i] -= tmp * 2;
                A[(i + 1) % n] += tmp;
            }
         }
    }

    for (int i = 0; i < n; ++ i) if (A[i] != B[i]){
        cout << "No" << "\n";
        return;
    }

    cout << "Yes" << "\n";
}

int main(){

    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    process();
    return 0;

}

• Subtask 1: 15 / 15
• Subtask 2: 40 / 40
• Subtask 3: 45 / 45