oj.uz

Submission #45149

# Submission time Handle Problem Language Result Execution time Memory
45149 2018-04-11T14:22:47 Z erdemkiraz Fireworks (APIO16_fireworks) C++11
19 / 100
 162 ms 1180 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair < int, int > ii;

const int N = 400 + 5;

int n, m;
vector < ii > v[N];
int dp[N][N], dp2[N];

void dfs(int x) {
	for(auto u : v[x])
		dfs(u.first);
	if(x > n) {
		for(int i = 1; i < N; i++)
			dp[x][i] = 1e9;
		return;
	}
	for(auto u : v[x]) {
		for(int i = 0; i < N; i++)
			dp2[i] = 1e9;
		for(int i = 0; i < N; i++)
			for(int j = -N; j < N; j++)
				if(u.second + j >= 0 and i + j + u.second < N)
					dp2[i + j + u.second] = min(dp2[i + j + u.second], dp[u.first][i] + abs(j));
		for(int i = 0; i < N; i++)
			dp[x][i] += dp2[i];
	}
}

int main() {

	scanf("%d %d", &n, &m);

	for(int i = 2; i <= n + m; i++) {
		int x, c;
		scanf("%d %d", &x, &c);
		v[x].push_back({i, c});
	}

	dfs(1);

	int res = 1e9;

	for(int i = 0; i < N; i++) {
		res = min(res, dp[1][i]);
	}

	printf("%d\n", res);

    return 0;

}

Compilation message

fireworks.cpp: In function 'int main()':
fireworks.cpp:36:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
fireworks.cpp:40:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &x, &c);
   ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 248 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 452 KB Output is correct
2 Correct 17 ms 452 KB Output is correct
3 Correct 27 ms 704 KB Output is correct
4 Correct 63 ms 756 KB Output is correct
5 Correct 51 ms 756 KB Output is correct
6 Correct 55 ms 756 KB Output is correct
7 Correct 68 ms 812 KB Output is correct
8 Correct 109 ms 812 KB Output is correct
9 Correct 86 ms 940 KB Output is correct
10 Correct 94 ms 940 KB Output is correct
11 Correct 103 ms 948 KB Output is correct
12 Correct 111 ms 1008 KB Output is correct
13 Correct 116 ms 1008 KB Output is correct
14 Correct 127 ms 1180 KB Output is correct
15 Correct 126 ms 1180 KB Output is correct
16 Correct 131 ms 1180 KB Output is correct
17 Correct 129 ms 1180 KB Output is correct
18 Correct 137 ms 1180 KB Output is correct
19 Correct 162 ms 1180 KB Output is correct

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 248 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 248 KB Output isn't correct
2 Halted 0 ms 0 KB -