제출 #220196

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
220196	2020-04-07 09:53:33	DodgeBallMan	Construction of Highway (JOI18_construction)	C++14	16 / 100	2081 ms	100952 KiB

construction

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#include <bits/stdc++.h>
#define pii pair<int, int>
#define x first
#define y second
using namespace std;
const int N = 1e5 + 10;
int par[N], rot[N], sz[N], hv[N], c[N], pos[N], n;
long long t[N];
deque<pii> col[N];
vector<pii> qq;
vector<int> g[N];
int dfs( int u, int p ) {
    sz[u] = 1, hv[u] = -1, par[u] = p;
    for( int v : g[u] ) if( v != p ) {
        int mx = -1;
        int now = dfs( v, u );
        sz[u] += now;
        if( now > mx ) mx = now, hv[u] = v;
    }
    return sz[u];
}
void hld() {
    for( int i = 1, idx = 0; i <= n ; i++ ) if( hv[par[i]] != i ) 
        for( int j = i ; j != -1 ; j = hv[j] ) 
            rot[j] = i, pos[j] = ++idx;
}
 
 
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컴파일 시 표준 에러 (stderr) 메시지

construction.cpp: In function 'int main()':
construction.cpp:86:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
construction.cpp:87:42: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for( int i = 1 ; i <= n ; i++ ) scanf("%d",&c[i]);
                                     ~~~~~^~~~~~~~~~~~
construction.cpp:89:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d",&s,&t);
         ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 9 / 9
• Subtask 3: 0 / 84