Submission #284174

#	Time	Username	Problem	Language	Result	Execution time	Memory
284174		jainbot27	Remittance (JOI19_remittance)	C++17	100 / 100	371 ms	8740 KiB

remittance

#include <bits/stdc++.h>
#define m std::max_element
int main(){
    int n;scanf("%d",&n);std::vector<int>a(n),b(n);
    for(int i=0;i<n;i++)scanf("%d%d",&a[i],&b[i]);
    if(*m(b.begin(),b.end())==0){
        puts(*m(a.begin(),a.end())==0?"Yes":"No");exit(0);
    }
    int g=1;
    while(g){
        g=0;
        for(int i=0;i<n;i++){
            if(a[i]>b[i]){
                int r=(a[i]-b[i]+1)/2;
                a[(i+1)%n]+=r;
                a[i]-=r*2; 
                g=1;
            }
        }
    }
    g=1;
    for(int i=0; i < n; i++){
        g&=a[i]==b[i];
    }
    puts(g?"Yes":"No");
}

Compilation message (stderr)

remittance.cpp: In function 'int main()':
remittance.cpp:4:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    4 |     int n;scanf("%d",&n);std::vector<int>a(n),b(n);
      |           ~~~~~^~~~~~~~~
remittance.cpp:5:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    5 |     for(int i=0;i<n;i++)scanf("%d%d",&a[i],&b[i]);
      |                         ~~~~~^~~~~~~~~~~~~~~~~~~~

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