Submission #19724888

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Source Code Expand

#include <iostream> 
using namespace std;
int N,M,T,t,last;  //N:初始电量,M:进了几个咖啡店
int main()
{
	cin>>N>>M>>T;
	last=N;
	for(int i=1;i<=M;i++)
    {
    	int A,B;
    	cin>>A>>B;
    	last-=A-t;
    	if(last<1){
    		cout<<"No";
    		return 0;
        }
    	t=B;
    	last+=B-A;
    	if(last>=N)
    		last=N;	
	}
    last-=T-t;
    if(last<1)
    		cout<<"No";
    else
    	cout<<"Yes";
    
    
    
    
    return 0;
}

Submission Info

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