#include <stdio.h> #include <string.h> #include <math.h> int main () { long a,b,i,j,temp; long long sum; int flag; while(scanf("%ld %ld",&a,&b)!=EOF){ sum=0; if(a>b){ temp=a; a=b; b=temp; } for(i=a+1;i<b;i++){ flag=0; for(j=2;j<=sqrt(i);j++){ if(i%j==0){ flag=1; break; } } if(flag==0&&i!=1){ sum+=i; } } printf("%lld\n",sum); } return 0; } |
Double click to view unformatted code.