oj.uz

Submission #45151

# Submission time Handle Problem Language Result Execution time Memory
45151 2018-04-11T14:23:52 Z erdemkiraz Fireworks (APIO16_fireworks) C++11
19 / 100
 110 ms 1132 KB 
#include <bits/stdc++.h>

using namespace std;

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

const int N = 310 + 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 488 KB Output is correct
2 Correct 11 ms 544 KB Output is correct
3 Correct 22 ms 560 KB Output is correct
4 Correct 35 ms 620 KB Output is correct
5 Correct 36 ms 620 KB Output is correct
6 Correct 34 ms 780 KB Output is correct
7 Correct 46 ms 780 KB Output is correct
8 Correct 56 ms 780 KB Output is correct
9 Correct 49 ms 852 KB Output is correct
10 Correct 59 ms 852 KB Output is correct
11 Correct 60 ms 876 KB Output is correct
12 Correct 76 ms 1004 KB Output is correct
13 Correct 96 ms 1004 KB Output is correct
14 Correct 75 ms 1004 KB Output is correct
15 Correct 110 ms 1004 KB Output is correct
16 Correct 87 ms 1132 KB Output is correct
17 Correct 94 ms 1132 KB Output is correct
18 Correct 83 ms 1132 KB Output is correct
19 Correct 81 ms 1132 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 -