Submission #253169

#	Time	Username	Problem	Language	Result	Execution time	Memory
253169		kshitij_sodani	Remittance (JOI19_remittance)	C++14	0 / 100	0 ms	384 KiB

remittance

#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define mp make_pair
#define pb push_back
#define a first 
#define b second
llo n;
llo it[1000001];
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin>>n;
	for(llo i=0;i<n;i++){
		llo aa,bb;
		cin>>aa>>bb;
		it[i]=aa-bb;
	}
	for(llo i=0;i<40;i++){
		for(llo j=0;j<n;j++){
			if(it[j]<=1){
				continue;
			}
			llo ind;
			for(llo k=29;k>=1;k--){
				if(((llo)1<<k)&it[j]){
					ind=k;
					break;
				}
			}
			it[j]-=((llo)1<<ind);
			it[(j+1)%n]+=((llo)1<<ind)/2;
		}
	}
	llo st=0;
	for(llo i=0;i<n;i++){
		if(it[i]!=0){
			st=1;
		}
	}
	if(st==0){
		cout<<"YES"<<endl;
	}
	else{
		cout<<"NO"<<endl;
	}


	return 0;
}

Compilation message (stderr)

remittance.cpp: In function 'int main()':
remittance.cpp:25:8: warning: 'ind' may be used uninitialized in this function [-Wmaybe-uninitialized]
    llo ind;
        ^~~

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