c++哪里出错了

Question

#include<bits/stdc++.h>using namespace std;long long js(long long);int n;long long sum=0;int main(){cin>>n;for(int i=1;1<=n;i++)sum+=js(i);cout<<sum<<endl;return 0;}long long js(int n){long long s=1;for(int i=1;i<=n;i++)s*=i;return s;}openjudge中‘求10000以内n的阶乘’

Answer 1

#include<bits/stdc++.h>

using namespace std;

long long js(long long);

int n;

long long sum=0;

int main() {

  cin>>n;

  for ( int i=1;1<=n;i++ )

  sum+=js((long long)i);

  cout<<sum<<endl;

  return 0;

}

long long js(long long n) { long long s=1;

  for ( int i=1;i<=n;i++ ) s*=i;

  return s;

}

追问

Time Limit Exceeded!!!