Submission #1110571

#	Time	Username	Problem	Language	Result	Execution time	Memory
1110571		imarn	Remittance (JOI19_remittance)	C++14	0 / 100	1 ms	504 KiB

remittance

#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define plx pair<ll,int>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define vvi vector<vi>
#define pp pair<ll,int>
#define ub(x,i) upper_bound(all(x),i)-x.begin()
using namespace std;
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n;cin>>n;
    ll a[n+1],b[n+1];
    for(int i=1;i<=n;i++)cin>>a[i]>>b[i];
    for(int j=0;j<30;j++){
        for(int i=1;i<=n;i++){
            if(a[i]<=b[i])continue;
            ll rs = (a[i]-b[i]+1)/2;
            a[i]-=2*rs;
            if(i!=n)a[i+1]+=rs;
            else a[1]+=rs;
        }
    }bool ok=1;
    for(int i=1;i<=n;i++){
        if(a[i]<b[i])ok=0;
    }
    cout<<(ok?"Yes":"No");
}

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