#include<iostream> using namespace std; //求素数 bool sushu(int a) { int n=0; for(int i=2;i<a;i++) if(a%i==0) n++; if(n==0) return true; else return false; } int main() { int a,b; while(cin>>a>>b) { int sum=0; for(int i=a+1;i<b;i++) if(sushu(i)) sum+=i; cout<<sum<<endl; } /* Main.cc: In function 'int main()': Main.cc:23:2: error: expected '}' at end of input } ^ */ |
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