Submission #253179

#	Time	Username	Problem	Language	Result	Execution time	Memory
253179		kshitij_sodani	Remittance (JOI19_remittance)	C++14	0 / 100	1 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;
	set<pair<int,int>> cur;
	int su=0;
	for(llo i=0;i<n;i++){
		llo aa,bb;
		cin>>aa>>bb;

		it[i]=aa-bb;
		cur.insert({-it[i],i});
	}
	while(true){
//for(int i=0;i<40*n;i++){
		pair<int,int> no=*cur.begin();
		no.a*=-1;
		if(no.a<=1){
			break;
		}
		cur.erase(cur.begin());
		int x=1;
		cur.erase({-it[(no.b+1)%n],(no.b+1)%n});
		it[(no.b+1)%n]+=x;
		cur.insert({-it[(no.b+1)%n],(no.b+1)%n});
		it[no.b]-=2*x;
		cur.insert({-it[no.b],no.b});
//	}
	}
	/*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:16:6: warning: unused variable 'su' [-Wunused-variable]
  int su=0;
      ^~

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