zoj 2485 Lazy Pianist

#include <stdio.h>int tone(long long pos){    long long bin;    int res;    bin=1;    res=0;    while(bin>0){        if(bin&pos) res++;        bin<<=1;    }    return res;}int main(){    int ri,re;    long long i,total,cant,pos;    scanf("%d",&re);    for(ri=1;ri<=re;ri++){        scanf("%lld%lld%lld",&total,&cant,&pos);        printf("Case %d:",ri);        if(pos+cant-1>total){ printf(" It cannot be solved.n"); continue;        }        for(i=0;i<cant;i++) printf(" %d",tone(pos++));        printf("n");    }    return 0;   }