oj.uz

답안 #895391

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
895391 2023-12-29T21:04:57 Z ilef Regions (IOI09_regions) C++14
13 / 100
 247 ms 3884 KB 
#include <bits/stdc++.h>
using namespace std;
const int N=25001;
const int R=501;
int H[N];
vector<int>graph[N];
vector<int>v[R];
int in[N];
int ot[N];
int timer = 0;
void dfs(int v , int p ) {
	in[v] = timer++;
	for (int x : graph[v]) {
		if (x == p) continue;
		dfs(x, v);
	}
	ot[v] = timer++;
}
 
 
bool anc(int u, int v) { return (in[u] <= in[v] && ot[u] >= ot[v]); }
 
int main() {
 
	int n,r,q;
	cin >> n >>r >> q;
	cin>>H[0];
    H[0]--;
    v[H[0]].push_back(0);
    for(int i=1;i<=n-1;i++){
        int u;
        cin>>u>>H[i];
        H[i]--;
        u--;
        v[H[i]].push_back(i);
        graph[u].push_back(i);
        graph[i].push_back(u);
    }
       
        dfs(0,-1);
       while(q--){
           int r1,r2;
           cin>>r1>>r2;
           //cout<<endl;
           
           r1--;r2--;
           int cnt=0;
           for(auto u:v[r1]){
               for(auto w:v[r2]){
                   if(anc(u,w)==true){
                       cnt++;
                   }
               }
           }
           cout<<cnt<<endl;
              
       }
	
}

Subtask #1
13.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 856 KB Output is correct
2 Correct 0 ms 856 KB Output is correct
3 Correct 1 ms 856 KB Output is correct
4 Correct 2 ms 856 KB Output is correct
5 Correct 4 ms 856 KB Output is correct
6 Correct 12 ms 1112 KB Output is correct
7 Correct 15 ms 1112 KB Output is correct
8 Correct 23 ms 1112 KB Output is correct
9 Correct 28 ms 1368 KB Output is correct
10 Correct 59 ms 1404 KB Output is correct
11 Correct 142 ms 1716 KB Output is correct
12 Correct 142 ms 2136 KB Output is correct
13 Correct 247 ms 2092 KB Output is correct
14 Runtime error 13 ms 3884 KB Execution killed with signal 11
15 Runtime error 12 ms 3832 KB Execution killed with signal 11

Subtask #2
0 / 85.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 13 ms 3852 KB Execution killed with signal 11
2 Runtime error 17 ms 3680 KB Execution killed with signal 11
3 Runtime error 18 ms 3672 KB Execution killed with signal 11
4 Runtime error 1 ms 1624 KB Execution killed with signal 11
5 Runtime error 1 ms 1624 KB Execution killed with signal 11
6 Runtime error 1 ms 1624 KB Execution killed with signal 11
7 Runtime error 1 ms 1624 KB Execution killed with signal 11
8 Runtime error 1 ms 1624 KB Execution killed with signal 11
9 Runtime error 1 ms 1624 KB Execution killed with signal 11
10 Runtime error 1 ms 1624 KB Execution killed with signal 11
11 Runtime error 1 ms 1624 KB Execution killed with signal 11
12 Runtime error 2 ms 1620 KB Execution killed with signal 11
13 Runtime error 1 ms 1624 KB Execution killed with signal 11
14 Runtime error 1 ms 1624 KB Execution killed with signal 11
15 Runtime error 3 ms 1624 KB Execution killed with signal 11
16 Runtime error 1 ms 1624 KB Execution killed with signal 11
17 Runtime error 2 ms 1624 KB Execution killed with signal 11