제출 #485692

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
485692	2021-11-09 02:21:08	qwerasdfzxcl	Regions (IOI09_regions)	C++14	100 / 100	3475 ms	54396 KiB

regions

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#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
vector<int> adj[200200], S[25025], dfn[25025], S2[25025], dfn2[25025], P[25025];
int a[200200], in[200200], out[200200], cnt;
map<int, ll> ans[25025];
void dfs(int s){
    in[s] = ++cnt;
    S[a[s]].push_back(S[a[s]].back()+1);
    dfn[a[s]].push_back(in[s]);
    S2[a[s]].push_back(S2[a[s]].back()+1);
    dfn2[a[s]].push_back(in[s]);
    P[a[s]].push_back(s);
    for (auto &v:adj[s]) dfs(v);
    out[s] = ++cnt;
    S[a[s]].push_back(S[a[s]].back()-1);
    dfn[a[s]].push_back(out[s]);
}
int main(){
    int n, r, q;
    scanf("%d %d %d", &n, &r, &q);
    scanf("%d", a+1);
    for (int i=2;i<=n;i++){
        int x;
        scanf("%d %d", &x, a+i);
 
 
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XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

컴파일 시 표준 에러 (stderr) 메시지

regions.cpp: In function 'int main()':
regions.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     scanf("%d %d %d", &n, &r, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
regions.cpp:27:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |     scanf("%d", a+1);
      |     ~~~~~^~~~~~~~~~~
regions.cpp:30:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |         scanf("%d %d", &x, a+i);
      |         ~~~~~^~~~~~~~~~~~~~~~~~
regions.cpp:44:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |         scanf("%d %d", &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 85 / 85