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| 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 |
|---|---|---|---|---|---|---|---|---|---|
| #270648 | #2002. Race | cciafrino | Compile Error | / | / | C++20 | 2.1kb | 2023-12-01 10:54:26 | 2023-12-01 10:54:27 |
Judging History
answer
#pragma GCC optimize("Ofast")
#pragma GCC optimization ("unroll-loops")
#pragma GCC target("avx,avx2,fma")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include<bits/stdc++.h>
using namespace std;
int best_path(int N, int K, int H[][2], int L[]) {
const int INF = 1e9;
int ans = INF;
vector<vector<pair<int, int>>> adj(N);
for (int i = 0; i+1 < N; ++i) {
// cout << H[i][0] << ' ' << H[i][1] << endl;
adj[H[i][0]].push_back({H[i][1], L[i]});
adj[H[i][1]].push_back({H[i][0], L[i]});
}
vector<bool> deleted(N);
vector<pair<int, int>> max_sub(N);
auto dfs = [&](auto&& self, int cur, int prv) -> int {
int sz = 1;
max_sub[cur] = {0, -1};
for (auto [nxt, weight] : adj[cur]) {
if (nxt == prv || deleted[nxt]) continue;
int cur_sz = self(self, nxt, cur);
sz += cur_sz;
max_sub[cur] = max(max_sub[cur], {cur_sz, nxt});
}
return sz;
};
auto get_dist = [&](auto& self, int cur, int prv, int64_t depth, int level, auto& path) -> void {
if (depth > K || level > ans) return;
path.push_back({depth, level});
for (auto [nxt, weight] : adj[cur]) {
if (nxt == prv || deleted[nxt]) continue;
self(self, nxt, cur, depth + weight, level + 1, path);
}
};
auto rec = [&](auto&& self, int cur) -> void {
int total_sz = dfs(dfs, cur, -1);
while (max_sub[cur].first * 2 > total_sz) cur = max_sub[cur].second;
deleted[cur] = true;
vector<int> vals(K + 1, INF);
for (auto [nxt, weight] : adj[cur]) {
if (deleted[nxt]) continue;
vector<pair<int, int>> path; path.reserve(total_sz);
get_dist(get_dist, nxt, cur, weight, 1, path);
for (auto [dist, level] : path) {
if (dist > K) continue;
ans = min(ans, vals[K - dist] + level);
if (vals[K - dist] == INF && dist == K) {
ans = min(ans, level);
}
}
for (auto [dist, level] : path) {
if (dist > K) continue;
vals[dist] = min(vals[dist], level);
}
}
for (auto [nxt, weight] : adj[cur]) {
if (deleted[nxt]) continue;
self(self, nxt);
}
};
rec(rec, 0);
return (ans == INF ? -1 : ans);
}
详细
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/gthr.h:148,
from /usr/include/c++/11/ext/atomicity.h:35,
from /usr/include/c++/11/bits/ios_base.h:39,
from /usr/include/c++/11/ios:42,
from /usr/include/c++/11/istream:38,
from /usr/include/c++/11/sstream:38,
from /usr/include/c++/11/complex:45,
from /usr/include/c++/11/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
from answer.code:5:
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:102:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
102 | __gthrw(pthread_once)
| ^~~~~~~
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:102:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:103:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
103 | __gthrw(pthread_getspecific)
| ^~~~~~~
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:103:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:104:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
104 | __gthrw(pthread_setspecific)
| ^~~~~~~
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:104:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:106:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
106 | __gthrw(pthread_create)
| ^~~~~~~
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:106:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:107:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
107 | __gthrw(pthread_join)
| ^~~~~~~
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:107:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:108:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
108 | __gthrw(pthread_equal)
| ^~~~~~~
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:108:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:109:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
109 | __gthrw(pthread_self)
| ^~~~~~~
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:109:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:110:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
110 | __gthrw(pthread_detach)
| ^~~~~~~
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:110:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:112:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
112 | __gthrw(pthread_cancel)
| ^~~~~~~
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:112:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:114:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
114 | __gthrw(sched_yield)
| ^~~~~~~
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:114:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:116:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
116 | __gthrw(pthread_mutex_lock)
| ^~~~~~~
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:116:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:117:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
117 | __gthrw(pthread_mutex_trylock)
| ^~~~~~~
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:117:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:119:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
119 | __gthrw(pthread_mutex_timedlock)
| ^~~~~~~
/usr/include/x86_64-linux-gnu/c++/11/bits/gthr-default.h:119:1: error: attribute value ‘tune=native’ was already specified in ‘target’ attribute
/usr/...