Submission #647081

#	Time	Username	Problem	Language	Result	Execution time	Memory
647081		georgievskiy	popa (BOI18_popa)	C++14	0 / 100	1 ms	208 KiB

popa

#include "popa.h"

#include <bits/stdc++.h>
using namespace std;

int rec(int l, int r, int* left, int* right) {
	if (l >= r)
		return -1;
	if (l + 1 == r)
		return l;
	int root;
	for (int i = l; i < r; i++) {
		if (query(l, r + 1, i, i)) {
			root = i;
			break;
		}
	}
	int l_c = rec(l, root, left, right);
	int r_c = rec(root + 1, r, left, right);
	left[root] = l_c, right[root] = r_c;
}

int solve(int n, int* left, int* right) {
	fill(left, left + n, -1), fill(right, right + n, -1);
	return rec(0, n, left, right);
}

Compilation message (stderr)

popa.cpp: In function 'int rec(int, int, int*, int*)':
popa.cpp:20:32: warning: control reaches end of non-void function [-Wreturn-type]
   20 |  left[root] = l_c, right[root] = r_c;
      |                    ~~~~~~~~~~~~^~~~~
popa.cpp:20:7: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized]
   20 |  left[root] = l_c, right[root] = r_c;
      |       ^~~~

• Subtask 1: 0 / 37
• Subtask 2: 0 / 24
• Subtask 3: 0 / 39