Accepted
foo.cc: In function 'int main()':
foo.cc:7:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&a,&b);
~~~~~^~~~~~~~~~~~~~
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代码
#include <iostream>
#include <stdio.h>
using namespace std;
int main()
{
int a,b;
scanf("%d%d",&a,&b);
int ans_=0;
for(int i=a;i<=b;i++)
{
int ans=1;
for(int j=2;j*j<=i;j++)
{
if(i%j==0)
ans+=j+i/j;
}
if(ans<=i)continue;
int ans2=1;
for(int j=2;j*j<=ans;j++)
{
if(ans%j==0)
ans2+=j+ans/j;
}
if(ans2==i)
ans_+=1;
}
printf("%d",ans_);
}
