hdu 2103 Family planning (水)
#include "stdio.h" #include "math.h" int main() { int t; int n,m; int count; int num; int flag; int i; double sum; scanf("%d",&t); while(t--) { count=0; flag=0; sum=0; scanf("%d%d",&n,&m); for(i=1;i<=m;i++) { scanf("%d",&num); if(flag) count++;//sum+=pow(2,count); else if(i>n) count++; //sum+=pow(2,count); if(i<=n&&num) flag=1; } sum=pow(2,count)-1; printf("%.lf RMB\n",sum*10000); } return 0; }