oj.uz

Submission #645021

# Submission time Handle Problem Language Result Execution time Memory
645021 2022-09-26T00:06:29 Z Markomafko972 Power Plant (JOI20_power) C++14
6 / 100
 4 ms 5080 KB 
#include <bits/stdc++.h>
#define X first
#define Y second
#define pb push_back
#define pii pair<int, int>
typedef long long ll;
using namespace std;

const int MOD = 1e9 + 7;
const ll INF = 1e18;
const int OFF = (1 << 20);

int n, a, b, sol = 0;
char c;
vector<int> v[200005];
int val[200005];

int rek(int x, int prt) {
	int tren = 0, koldj = 0;
	for (int i = 0; i < (int)v[x].size(); i++) {
		if (prt == v[x][i]) continue;
		int sad = rek(v[x][i], x); 
		tren += sad;
		if (sad > 0) koldj++;
	}
	
	if (val[x] == 0) {
		sol = max(sol, tren);
		return tren;
	}
	else {
		if (koldj > 1) sol = max(sol, tren-1);
		else sol = max(sol, tren+1);
	
		return max(tren-1, 1);
	}
}

int main () {

	ios_base::sync_with_stdio(false);
	cin.tie(0);
	
	cin >> n;
	for (int i = 0; i < n-1; i++) {
		cin >> a >> b;
		v[a].push_back(b);
		v[b].push_back(a);
	}
	
	for (int i = 1; i <= n; i++) {
		cin >> c;
		val[i] = c - '0';
	}
	
	rek(1, 0);
	cout << sol;

	return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 3 ms 5024 KB Output is correct
5 Correct 4 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 4 ms 4948 KB Output is correct
8 Correct 3 ms 5024 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 4 ms 5024 KB Output is correct
11 Correct 2 ms 5024 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5024 KB Output is correct
16 Correct 3 ms 5020 KB Output is correct
17 Correct 4 ms 4948 KB Output is correct
18 Correct 4 ms 4948 KB Output is correct
19 Correct 4 ms 4948 KB Output is correct
20 Correct 4 ms 4948 KB Output is correct
21 Correct 3 ms 5028 KB Output is correct

Subtask #2
0.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 3 ms 5024 KB Output is correct
5 Correct 4 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 4 ms 4948 KB Output is correct
8 Correct 3 ms 5024 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 4 ms 5024 KB Output is correct
11 Correct 2 ms 5024 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5024 KB Output is correct
16 Correct 3 ms 5020 KB Output is correct
17 Correct 4 ms 4948 KB Output is correct
18 Correct 4 ms 4948 KB Output is correct
19 Correct 4 ms 4948 KB Output is correct
20 Correct 4 ms 4948 KB Output is correct
21 Correct 3 ms 5028 KB Output is correct
22 Incorrect 3 ms 5080 KB Output isn't correct
23 Halted 0 ms 0 KB -

Subtask #3
0.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 3 ms 5024 KB Output is correct
5 Correct 4 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 4 ms 4948 KB Output is correct
8 Correct 3 ms 5024 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 4 ms 5024 KB Output is correct
11 Correct 2 ms 5024 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5024 KB Output is correct
16 Correct 3 ms 5020 KB Output is correct
17 Correct 4 ms 4948 KB Output is correct
18 Correct 4 ms 4948 KB Output is correct
19 Correct 4 ms 4948 KB Output is correct
20 Correct 4 ms 4948 KB Output is correct
21 Correct 3 ms 5028 KB Output is correct
22 Incorrect 3 ms 5080 KB Output isn't correct
23 Halted 0 ms 0 KB -