#include<bits/stdc++.h> #define taskname "D" using namespace std; typedef long long ll; int main(){ ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); if(fopen(taskname".inp", "r")){ freopen(taskname".inp", "r", stdin); } int n; cin >> n; vector<int>a(n); for(int i = 0; i < n; i++){ ll x; cin >> x; a[i] = 63 - __builtin_clzll(x); } for(int i = 1; i < n; i++){ for(int j = 0; j < i; j++){ cout << ((a[i] >> 2) == (a[j] >> 2) ? 1 : ((a[i] >> 4) == (a[j] >> 4) ? 2 : 3)) << " "; } cout << "\n"; } }

Main.cpp: In function 'int main()':
Main.cpp:8:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |                 freopen(taskname".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~