Submission #1204215

#	Time	Username	Problem	Language	Result	Execution time	Memory
1204215		am_aadvik	Remittance (JOI19_remittance)	C++20	0 / 100	0 ms	328 KiB

remittance

#include <bits/stdc++.h>
using namespace std;

int main() {
    int n, mx = 0; cin >> n;
    vector<int> a(n), b(n);
    for(int i = 0; i < n; mx = max(mx, b[i]), ++i)
        cin >> a[i] >> b[i];
    for(int v = 0; v <= mx; ++v) {
        int x = v; bool ok = 1, mc = 0;
        for(int i = 1; i < n; ++i){
            int sub = a[i] + x - b[i];
            if((sub < 0) || (sub % 2)) {ok = 0; break;}
            x = sub / 2, mc |= (sub <= a[i]);
        }
        if(!(mc || ((v+v)<=a[0]))) continue;
        if(ok && ((a[0]+x-v-v) == b[0])) {cout << "Yes"; return 0;}
    }
    cout << "No";
}

• Subtask 1: 0 / 15
• Subtask 2: 0 / 40
• Subtask 3: 0 / 45