백준 알고리즘 23810번 : 골뱅이 찍기 - 뒤집힌 ㅋ

링크

https://www.acmicpc.net/problem/23810

sol1) 구현

#pragma GCC target("avx,avx2,fma")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
#define fastio ios::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define int int64_t
using namespace std;

int32_t main(){
  fastio;
  int n; cin >> n;
  const int sz = 5*n;
  for(int i = 1; i <= sz; i++){
    for(int j = 1; j <= sz; j++){
      if(i <= n || (sz - 3*n + 1 <= i && i <= sz - 2*n) || j <= n) cout << "@";
    }
    cout << "\n";
  }
}

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