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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main(){
  5.     int n; cin >> n;
  6.     int a[n+5];
  7.     for(int i=1; i<=n; ++i){
  8.         cin >> a[i];
  9.     }
  10.     sort(a+1, a+n+1);
  11.     int ans=1;
  12.     for(int i=2; i<=n; ++i){
  13.         if(a[i]!=a[i-1]){
  14.             ans++;
  15.         }
  16.     }
  17.     cout << ans;
  18.  
  19.     return 0;
  20. }
  21.  
Success #stdin #stdout 0s 5320KB
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stdin
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Standard input is empty
stdout
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257
https://ideone.com/qMjYQx
Code giải bài 2 contest nhập môn k26.
language:
C++14 (gcc 8.3)
created:
9 hours ago
visibility:
public

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