hdu 2103 Family planning

心情不好，刷道水题.

#include<iostream>#include<cmath>using namespace std;int main(){int t;cin>>t;while(t--){int m,n;cin>>m>>n;int flag=-1;int sum=0,t=0;if(m==0) flag++;for(int i=1;i<=n;i++){int x;cin>>x;if(x==1||i==m||flag!=-1) flag++;if(flag>0) sum+=1*pow(2,t),t++; }if(sum==0) cout<<"0 RMB"<<endl;else cout<<sum<<"0000 RMB"<<endl;}return 0;}