結果
| 問題 |
No.3222 Let the World Forget Me
|
| ユーザー |
tnakao0123
|
| 提出日時 | 2025-08-02 18:05:13 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 1,486 bytes |
| コンパイル時間 | 735 ms |
| コンパイル使用メモリ | 68,300 KB |
| 実行使用メモリ | 10,396 KB |
| 最終ジャッジ日時 | 2025-08-02 18:05:18 |
| 合計ジャッジ時間 | 4,265 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 25 WA * 6 |
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:37:8: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
37 | scanf("%d%d", &n, &m);
| ~~~~~^~~~~~~~~~~~~~~~
main.cpp:38:36: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
38 | for (int i = 0; i < n; i++) scanf("%d", ps + i);
| ~~~~~^~~~~~~~~~~~~~
main.cpp:41:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
41 | scanf("%d%d", &u, &v);
| ~~~~~^~~~~~~~~~~~~~~~
main.cpp:46:36: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
46 | for (int i = 0; i < m; i++) scanf("%d", cs + i), cs[i]--;
| ~~~~~^~~~~~~~~~~~~~
ソースコード
/* -*- coding: utf-8 -*-
*
* 3222.cc: No.3222 Let the World Forget Me - yukicoder
*/
#include<cstdio>
#include<vector>
#include<queue>
#include<algorithm>
#include<utility>
using namespace std;
/* constant */
const int MAX_N = 100000;
/* typedef */
using ll = long long;
using vi = vector<int>;
using qi = queue<int>;
using pii = pair<int,int>;
/* global variables */
int ps[MAX_N], cs[MAX_N];
vi nbrs[MAX_N];
int ds[MAX_N];
/* subroutines */
/* main */
int main() {
int n, m;
scanf("%d%d", &n, &m);
for (int i = 0; i < n; i++) scanf("%d", ps + i);
for (int i = 1; i < n; i++) {
int u, v;
scanf("%d%d", &u, &v);
u--, v--;
nbrs[u].push_back(v);
nbrs[v].push_back(u);
}
for (int i = 0; i < m; i++) scanf("%d", cs + i), cs[i]--;
fill(ds, ds + n, -1);
qi q;
for (int i = 0; i < m; i++) ds[cs[i]] = 0, q.push(cs[i]);
int maxd = 0;
while (! q.empty()) {
int u = q.front(); q.pop();
maxd = max(maxd, ds[u]);
for (auto v: nbrs[u])
if (ds[v] < 0) ds[v] = ds[u] + 1, q.push(v);
}
//for (int i = 0; i < n; i++) printf(" %d", ds[i]); putchar('\n');
priority_queue<pii> pq;
for (int u = 0; u < n; u++)
if (ds[u] > 0 && nbrs[u].size() == 1) pq.push({ps[u], ds[u]});
ll sum = 0;
for (int d = 0; ! pq.empty(); d++) {
while (! pq.empty() && pq.top().second <= d) pq.pop();
if (pq.empty()) break;
auto [pi, di] = pq.top(); pq.pop();
sum += pi;
}
printf("%lld\n", sum);
return 0;
}
tnakao0123