Submission #579159

#	Time	Username	Problem	Language	Result	Execution time	Memory
579159		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++) par[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;
      |               ^
Main.cpp: In function 'int main()':
Main.cpp:19:34: error: 'par' was not declared in this scope; did you mean '__pstl::execution::v1::par'?
   19 |   for(int i = 1; i < n + 1; i++) par[i] = i;
      |                                  ^~~
      |                                  __pstl::execution::v1::par
In file included from /usr/include/c++/10/pstl/glue_algorithm_defs.h:15,
                 from /usr/include/c++/10/algorithm:74,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from Main.cpp:1:
/usr/include/c++/10/pstl/execution_defs.h:111:27: note: '__pstl::execution::v1::par' declared here
  111 | constexpr parallel_policy par{};
      |                           ^~~