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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#360447#6350. MITGlaciaWA 65ms6248kbC++231.3kb2024-03-21 19:44:422024-03-21 19:44:44

Judging History

你现在查看的是最新测评结果

  • [2024-03-21 19:44:44]
  • 评测
  • 测评结果:WA
  • 用时:65ms
  • 内存:6248kb
  • [2024-03-21 19:44:42]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;

#define int long long

int n, u, v, w, a[100471], fa[100471], cnt[100471], ans[100471];
vector<pair<int, int>> G[100471], V;

void dfs(int u, int f, int x, int y) {
	V.emplace_back(y, x);
	for (auto [v, w] : G[u]) {
		if (v != f) {
			dfs(v, u, x, y + w);
		}
	}
}

int find(int u) {
	return u == fa[u] ? u : fa[u] = find(fa[u]);
}

signed main() {
	scanf("%lld", &n);
	for (int i = 1; i < n; i++) {
		scanf("%lld%lld%lld", &u, &v, &w);
		G[u].emplace_back(v, w);
		G[v].emplace_back(u, w);
	}
	for (int i = 1; i <= n; i++) {
		V = {{0, i}};
		for (auto [v, w] : G[i]) {
			dfs(v, i, v, w);
		}
		sort(V.begin(), V.end(), greater<pair<int, int>>());
		a[n - 1] = n;
		for (int j = n - 2; j >= 0; j--) {
			a[j] = (V[j].second == V[j + 1].second ? a[j + 1] : j + 1);
		}
		iota(fa, fa + n + 1, 0);
		memset(cnt, 0, sizeof(cnt));
		int res = 0, pos = 0;
		for (int j = 0; j < n; j++) {
			while (find(pos) > pos) {
				pos++;
			}
			int x = pos;
			if (cnt[V[pos].second] > j / 2) {
				x = find(a[j]);
				if (x == n) {
					break;
				}
			}
			auto [d, v] = V[x];
			cnt[v]++;
			res += d;
			fa[x] = x + 1;
			ans[j + 1] = max(ans[j + 1], res);
		}
	}
	for (int i = 2; i <= n; i += 2) {
		printf("%lld ", ans[i]);
	}
}

Details

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Test #1:

score: 100
Accepted
time: 1ms
memory: 6036kb

input:

7
1 3 99
2 3 82
3 4 4
4 5 43
5 6 5
4 7 3

output:

181 280 287 

result:

ok 3 number(s): "181 280 287"

Test #2:

score: -100
Wrong Answer
time: 65ms
memory: 6248kb

input:

1000
328 12 58771429
881 504 17030494
847 622 20805817
12 922 58532669
879 929 52585738
495 726 27873950
855 17 37971674
797 941 76999719
702 610 719916
479 127 97829887
731 557 55300256
282 615 88802280
651 318 64099880
540 51 6547869
896 54 87823596
674 879 80674008
77 691 54802376
193 851 7869172...

output:

48829042195 97613382343 146268479567 194782758998 243120633399 291469532829 339657517459 387815645995 435821231944 483717446257 531476208289 579182975985 626793764008 674259794140 721617453738 768890961261 816032104456 863044440224 909993041382 956790589086 1003491332151 1050093110804 1096582356539 ...

result:

wrong answer 2nd numbers differ - expected: '97562386542', found: '97613382343'