#include <stdio.h> int main(){ int a,b,temp; while(scanf("%d %d",&a,&b)!=EOF){ if(a>b){ temp=a; a=b; b=temp; } int i,j,sum=0; for(i=a+1;i<b;i++){ int count=0; for(j=2;j<i;j++){ if(i%j==0){ count++; } } if(count==0){ sum=sum+i; } } printf("%d\n",sum); } } |
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