Submission #402948

#	Time	Username	Problem	Language	Result	Execution time	Memory
402948		wildturtle	Remittance (JOI19_remittance)	C++14	100 / 100	931 ms	36432 KiB

remittance

#include<bits/stdc++.h>
#define ll long long
#define f first
#define sc second
#define pb push_back
using namespace std;
ll a,b,c,d,i,e,f,g,n,m,k,l;
pair <ll,ll> A[1000006];
int main() {
    cin>>n;
    for(ll i=1;i<=n;i++) {
        cin>>A[i].f>>A[i].sc;
    }
    while(true) {
        b=0;
        for(ll i=1;i<=n;i++) {
            if(A[i].f<=A[i].sc) continue;
            a=A[i].f-A[i].sc+1;
            if(A[i].f<(a/2)*2) continue;
            if(i==n) A[1].f+=a/2;
            else A[i+1].f+=a/2;
            if(a/2>0) b=1;
            A[i].f-=(a/2)*2;
        }
        if(b==0) break;
    }
    a=0;
    for(ll i=1;i<=n;i++) {
        if(A[i].f!=A[i].sc) a=1;
    }
    if(a==1) cout<<"No";
    else cout<<"Yes";
}

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