QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#684495#6107. One PathhhoppitreeWA 1ms4044kbC++171.2kb2024-10-28 13:55:332024-10-28 13:55:34

Judging History

你现在查看的是最新测评结果

  • [2024-10-28 13:55:34]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:4044kb
  • [2024-10-28 13:55:33]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;

const int N = 2005;

int m;
long long f[N][N][3];
vector< pair<int, int> > G[N];

int dfs(int x, int fa = -1, long long lst = -1e18) {
    int sz = 0;
    for (auto [v, w] : G[x]) {
        if (v == fa) continue;
        int tsz = dfs(v, x, w);
        for (int i = 2; ~i; --i) {
            for (int j = 2 - i; ~j; --j) {
                for (int p = min(m, sz); ~p; --p) {
                    for (int q = min(m - p, tsz); ~q; --q) {
                        f[x][p + q][i + j] = max(f[x][p + q][i + j], f[x][p][i] + f[v][q][j] + (j == 1 ? w : 0));
                    }
                }
            }
        }
        sz += tsz;
    }
    for (int i = 0; i < m && i <= sz; ++i) {
        f[x][i + 1][0] = max(f[x][i + 1][0], f[x][i][2] + lst);
    }
    return sz + 1;
}

signed main() {
    int n; scanf("%d%d", &n, &m);
    for (int i = 1, x, y, v; i < n; ++i) {
        scanf("%d%d%d", &x, &y, &v);
        G[x].push_back({y, v});
        G[y].push_back({x, v});
    }
    dfs(1);
    for (int i = 0; i <= m; ++i) {
        printf("%lld%c", *max_element(f[1][i], f[1][i] + 3), " \n"[i == m]);
    }
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3932kb

input:

5 1
1 3 2
4 5 4
3 4 3
2 3 7

output:

14 16

result:

ok 2 number(s): "14 16"

Test #2:

score: 0
Accepted
time: 0ms
memory: 3832kb

input:

7 2
1 2 4
2 3 6
2 4 2
4 5 5
2 6 1
4 7 3

output:

13 20 21

result:

ok 3 number(s): "13 20 21"

Test #3:

score: -100
Wrong Answer
time: 1ms
memory: 4044kb

input:

50 2000
3 34 1
37 39 58720256
17 24 14680064
28 39 1
25 38 1
21 29 1
3 30 1
26 36 1
5 48 14336
4 22 1
26 41 1
41 44 1
5 14 1
23 25 28672
40 41 224
27 39 1
4 20 7340032
7 47 939524096
11 46 114688
30 49 3584
34 44 1
7 35 1
10 29 1
27 33 29360128
16 36 56
8 28 1
13 38 57344
34 45 896
15 35 469762048
1...

output:

1409286145 1761607683 1849688069 1871708167 1877213193 1878589451 1878933517 1879019535 1879041041 1879046419 1879047765 1879048103 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 1879048160 187...

result:

wrong answer 51st numbers differ - expected: '1879048160', found: '0'