1097. LED Modding

水，看清楚題目要求就行咯

#include <iostream>#include <string>#include <iomanip>#include <algorithm>using namespace std;class R{public:string name;int resis;}arr[10001];bool cmp(R x,R y){return x.resis<y.resis;}int main(){int a,b,c,d;double target;while(cin>>a>>b>>c>>d){if(a<=0) {cout<<"IMPOSSIBLE"<<endl;continue;}for(int i=0;i<d;i++)cin>>arr[i].name>>arr[i].resis;target=(a-b)*1000.0/c;if(target<=0){cout<<"---"<<endl;continue;}sort(arr,arr+d,cmp);bool b=false;for(int i=0;i<d;i++){if(arr[i].resis>=target){b=true;cout<<fixed<<setprecision(2)<<target<<" "<<arr[i].name<<endl;break;}}if(!b) cout<<"IMPOSSIBLE"<<endl;}return 0;}