제출 #922258

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
922258	2024-02-05 10:00:51	Beerus13	공장들 (JOI14_factories)	C++14	100 / 100	4462 ms	372804 KiB

factories

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#include <bits/stdc++.h>
// #include "factories.h"
using namespace std;
#define ll long long
#define pii pair<int, ll>
const int N = 5e5 + 5;
const ll inf = 1e15;
 
int n, q, S, T, centroid;
int sz[N], vt[N];
vector<pii> g[N], ancestors[N];
bool del[N];
ll dp[N];
int dfs_size(int u, int p = 0) {
    sz[u] = 1;
    for(auto [v, w] : g[u]) if(v != p && !del[v]) {
        sz[u] += dfs_size(v, u);
    }
    return sz[u];
}
 
int find_centroid(int u, int p, int num) {
    for(auto [v, w] : g[u]) if(v != p && !del[v] && sz[v] > num / 2) return find_centroid(v, u, num);
    return u;
}
 
void dfs_centroid(int u, int par, ll dis) {
    for(auto [v, w] : g[u]) if(v != par && !del[v]) dfs_centroid(v, u, dis + w);
    ancestors[u].emplace_back(centroid, dis);
 
 
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컴파일 시 표준 에러 (stderr) 메시지

factories.cpp: In function 'int dfs_size(int, int)':
factories.cpp:17:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   17 |     for(auto [v, w] : g[u]) if(v != p && !del[v]) {
      |              ^
factories.cpp: In function 'int find_centroid(int, int, int)':
factories.cpp:24:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   24 |     for(auto [v, w] : g[u]) if(v != p && !del[v] && sz[v] > num / 2) return find_centroid(v, u, num);
      |              ^
factories.cpp: In function 'void dfs_centroid(int, int, long long int)':
factories.cpp:29:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   29 |     for(auto [v, w] : g[u]) if(v != par && !del[v]) dfs_centroid(v, u, dis + w);
      |              ^
factories.cpp: In function 'void decomposition(int)':
factories.cpp:37:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   37 |     for(auto [v, w] : g[centroid]) {
      |              ^
factories.cpp: In function 'void add(int)':
factories.cpp:43:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   43 |     for(auto [v, w] : ancestors[u]) dp[v] = min(dp[v], w);
      |              ^
factories.cpp: In function 'void remove(int)':
factories.cpp:47:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   47 |     for(auto [v, w] : ancestors[u]) dp[v] = inf;
      |              ^
factories.cpp: In function 'long long int get(int)':
factories.cpp:52:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   52 |     for(auto [v, w] : ancestors[u]) ans = min(ans, w + dp[v]);
      |              ^

• Subtask 1: 15 / 15
• Subtask 2: 18 / 18
• Subtask 3: 67 / 67