Submission #534623

#	Time	Username	Problem	Language	Result	Execution time	Memory
534623		shrimb	Carnival (CEOI14_carnival)	C++17	Compilation error	0 ms	0 KiB

carnival

#include"bits/stdc++.h"
#define int long long
// #define endl '\n'
using namespace std;

int dsu[2000001];
int ans[2000001];

int Find (int x) {
	return dsu[x] == x ? x : dsu[x] = Find(dsu[x]);
}

void Union (int a, int b) {
	dsu[Find(a)] = Find(b);
}

bool Query (int a, int b) {
	cout << "2 " << a << " " << b << endl;
	int x;
	cin >> x;
	return x == 1;
}


signed main () {

	int n;
	cin >> n;
	for (int i = 1 ; i <= n ; i++) dsu[u] = i;
	for (int i = 1 ; i <= n ; i++) {
		bitset<151> vis;
		vis[i] = 1;
		for (int j = 0 ; j < 30 ; j++) {
			int x = rand() % n + 1;
			if (vis[x]) {j-=vis.count() < n; continue;}
			else {
				vis[x] = 1;
				if (Query(i, x)) Union(i, x);
			}
		}
	}

	int c = 1;
	for (int i = 1 ; i <= n ; i++) if (dsu[i] == i) ans[i] = c++;
	cout << 0 << " ";
	for (int i = 1 ; i <= n ; i++) cout << ans[Find(i)] << " ";
}

Compilation message (stderr)

carnival.cpp: In function 'int main()':
carnival.cpp:29:37: error: 'u' was not declared in this scope
   29 |  for (int i = 1 ; i <= n ; i++) dsu[u] = i;
      |                                     ^
carnival.cpp:35:32: warning: comparison of integer expressions of different signedness: 'std::size_t' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   35 |    if (vis[x]) {j-=vis.count() < n; continue;}
      |                    ~~~~~~~~~~~~^~~