Submission #1153314

#	Time	Username	Problem	Language	Result	Execution time	Memory
1153314		brover29	Remittance (JOI19_remittance)	C++20	100 / 100	142 ms	12180 KiB

remittance

#include <bits/stdc++.h>
//qwerty47924692
using namespace std;
using ll = int;
const ll N=1e6+29;
const string br="617283";
#define sz(a)(ll)a.size()
#define f first
#define s second
ll n,a[N],b[N],diff[N];
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    srand((time(0)));

    cin>>n;
    ll mxa=0,mxb=0;
    for(ll i=1;i<=n;i++){
        cin>>a[i]>>b[i];
        mxa=max(mxa,a[i]);
        mxb=max(mxb,b[i]);
        diff[i]=a[i]-b[i];
    }
    if(mxb==0){
        cout<<(mxa==0 ? "Yes" : "No");
        return 0;
    }
    for(ll _=1;_<=(ll)50;_++){
        for(ll i=1;i<=n;i++){
            if(diff[i]>0){
                diff[i%n+1]+=(diff[i]+1)/2;
                diff[i]-=(diff[i]+1)/2*2;
            }
        }
    }for(ll i=1;i<=n;i++){
        if(diff[i]){
            cout<<"No";
            return 0;
        }
    }
    cout<<"Yes";
}

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