95求调,第六个测试点WA,入坑OI1个月萌新
#include<bits/stdc++.h> using namespace std; double s,x,v=7,sum=0; int main() { cin>>s>>x; while(1){ sum+=v; v*=0.98; if(sum>=s-x-v) break; } if(x*2>=v) cout<<"y"; else cout<<"n"; return 0; }