Submission #579163

#	Time	Username	Problem	Language	Result	Execution time	Memory
579163		Trisanu_Das	Kutije (COCI21_kutije)	C++17	Compilation error	0 ms	0 KiB

Main

#include <bits/stdc++.h>
using namespace std;
 
int parent[1001];
 
int find(int u){
  if(u = parent[u]) return u;
  return parent[u] = find(parent[u]);
}
 
void join(int u, int v){
  u = find(u); v = find(b);
  if(a == b) return;
  parent[b] = a;
}
 
int main(){
  int n, m, q; cin >> n >> m >> q;
  for(int i = 1; i < n + 1; i++) parent[i] = i;
  for(int i = 1; i <= m; i++)
  {
		for(int j = 1; j <= n; j++)
		{
			int x; cin >> x;
			if(find(x) != find(j)) join(x, j);
		}
  }
  while(q--){
    int a, b; cin >> a >> b;
    if(find(a) == find(b)) cout << "DE\n"; else cout << "NE\n";
  }
}

Compilation message (stderr)

Main.cpp: In function 'int find(int)':
Main.cpp:7:8: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
    7 |   if(u = parent[u]) return u;
      |      ~~^~~~~~~~~~~
Main.cpp: In function 'void join(int, int)':
Main.cpp:12:25: error: 'b' was not declared in this scope
   12 |   u = find(u); v = find(b);
      |                         ^
Main.cpp:13:6: error: 'a' was not declared in this scope
   13 |   if(a == b) return;
      |      ^
Main.cpp:14:15: error: 'a' was not declared in this scope
   14 |   parent[b] = a;
      |               ^