oj.uz

Submission #30885

# Submission time Handle Problem Language Result Execution time Memory
30885 2017-07-30T10:53:19 Z cgiosy None (KOI16_tree) C++14
0 / 100
 26 ms 12960 KB 
#include <bits/stdc++.h>
using namespace std;

int n, m, q, a, b, c, d, x, k;
struct {int p; int r; set<int> c;} t[200010];

void f(int i)
{
	t[i].r = k;

	for(int j : t[i].c)
		f(j);
}

int main()
{
	cin >> n >> q;

	t[1].p = t[1].r = 1;

	for(int i = 2; i <= n; i++)
	{
		cin >> a;
		t[i].p = a;
		t[i].r = 1;
		t[a].c.insert(i);
	}

	for(int i = 0, m = n + q; i < q; i++)
	{
		cin >> b >> c >> d;
		x = (t[b].r == t[c].r);

		puts(x ? "YES" : "NO");

		if(d)
		{
			k = x ? b : c;
			t[k].c.erase(t[k].p);
			f(k);
		}
	}
}

Compilation message

tree.cpp: In function 'int main()':
tree.cpp:29:17: warning: unused variable 'm' [-Wunused-variable]
  for(int i = 0, m = n + q; i < q; i++)
                 ^

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 26 ms 12960 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 26 ms 12960 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 26 ms 12960 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 26 ms 12960 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 45.0

# Verdict Execution time Memory Grader output
1 Incorrect 26 ms 12960 KB Output isn't correct
2 Halted 0 ms 0 KB -