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  1. #include<stdio.h>
  2. int main(){
  3.     int n;
  4.     long long a=1;
  5.     scanf("%d",&n);
  6.     for(long long i=2;i<=n;i++){
  7.         a=a*i;
  8.         }
  9.     printf("%d!=%lld",n,a);
  10. }
Success #stdin #stdout 0s 5320KB
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stdin
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15
stdout
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15!=1307674368000
https://ideone.com/vCQa0i
language:
C (clang 8.0)
created:
6 hours ago
visibility:
public

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