oj.uz

Submission #45153

# Submission time Handle Problem Language Result Execution time Memory
45153 2018-04-11T14:24:54 Z erdemkiraz Fireworks (APIO16_fireworks) C++11
19 / 100
 136 ms 1020 KB 
#include <bits/stdc++.h>

using namespace std;

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

const int N = 300 + 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 376 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 5 ms 376 KB Output is correct
2 Correct 11 ms 564 KB Output is correct
3 Correct 16 ms 568 KB Output is correct
4 Correct 25 ms 632 KB Output is correct
5 Correct 32 ms 632 KB Output is correct
6 Correct 37 ms 632 KB Output is correct
7 Correct 39 ms 684 KB Output is correct
8 Correct 45 ms 864 KB Output is correct
9 Correct 48 ms 864 KB Output is correct
10 Correct 54 ms 876 KB Output is correct
11 Correct 60 ms 876 KB Output is correct
12 Correct 136 ms 1004 KB Output is correct
13 Correct 66 ms 1004 KB Output is correct
14 Correct 84 ms 1020 KB Output is correct
15 Correct 78 ms 1020 KB Output is correct
16 Correct 91 ms 1020 KB Output is correct
17 Correct 78 ms 1020 KB Output is correct
18 Correct 72 ms 1020 KB Output is correct
19 Correct 73 ms 1020 KB Output is correct

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 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 376 KB Output isn't correct
2 Halted 0 ms 0 KB -