#include<iostream>
using namespace std;
int main(){
	int m,t,u,f,d,time=0,count=0;
	char s;
	while(cin>>m>>t>>u>>f>>d){
	while(t!=0){
		scanf("\n%c",&s);
		switch(s){
		case 'u':if((time+u+d)<=m)
				{
					time+=u+d;
					count++;
				}
					break;
		case 'f':if((time+2*f)<=m)
				{	  
					time+=2*f;
			        count++;
				}
			      break;
		case 'd':if((time+d+u)<=m)
				 {
					 time+=d+u;
					 count++;
				 }
				 break;
		}
		t--;
	}
	cout<<count<<endl;
	}
	return 0;
}

• 路是连续的，只要遇到不满足if条件的就该停止判断，而不是继续判断下一段路 (0) Eov_Second 2016-12-09 17:42:15