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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#140063 | #4400. Homework | APROHACK | 0 | 8ms | 33040kb | C++14 | 3.0kb | 2023-08-15 01:57:59 | 2023-08-15 01:58:00 |
Judging History
answer
#include <bits/stdc++.h>
#define pb push_back
#define ll long long
#define ff first
#define ss second
using namespace std;
int n, q, k, t;
int roots[2];
vector<int>child[500005][2];
vector<int>chosen;
bool isChosen[500005];
int lca[500005][20][2];
int distancia[500005][20][2];
int deep[5000005][2];
void bfs(int s, int tri = 0){
queue<pair<int, int > >cola; // node, deep
cola.push({s, 0});
while(!cola.empty() and chosen.size() < k){
auto cur = cola.front();
cola.pop();
chosen.pb(cur.ff);
deep[cur.ff][tri] = cur.ss;
isChosen[cur.ff] = true;
for(int i = 0 ; i < child[cur.ff][tri].size() ; i ++){
lca[child[cur.ff][tri][i]][0][tri] = cur.ff;
cola.push({child[cur.ff][tri][i], cur.ss + 1});
}
}
}
int getDist(int a, int b, int tri){
if(deep[a][tri] < deep[b][tri])swap(a, b);
int dd = deep[a][tri] - deep[b][tri];
int ans = 0;
for(int i = 19 ; i >= 0 ; i --){
if(dd & (1<<i)){
ans += distancia[a][i][tri];
a = lca[a][i][tri];
}
}
if(a == b)return ans;
for(int i = 19 ; i >= 0 ; i --){
if(lca[a][i][tri] != lca[b][i][tri]){
ans += distancia[a][i][tri];
ans += distancia[b][i][tri];
a = lca[a][i][tri];
b = lca[a][i][tri];
}
}
ans += distancia[a][0][tri] + distancia[b][0][tri];
return ans;
}
int main(){
ios::sync_with_stdio(NULL);
cin.tie(0);
cout.tie(0);
/*
#ifdef LOCAL
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
* */
cin >> n >> k >> q >> t;
memset(isChosen, false, sizeof isChosen);
int temp;
for(int i = 1 ; i <= n ; i ++){
cin >> temp;
if(temp == -1)roots[0] = i;
else child[temp][0].pb(i);
}
for(int i = 1 ; i <= n ; i ++){
cin >> temp;
if(temp == -1)roots[1] = i;
else child[temp][1].pb(i);
}
bfs(roots[0]);
for(auto i : chosen)cout << i << " ";
cout << endl;
vector<int>questions;
for(int i = 0 ; i < k ; i ++){
for(int j = 0 ; j < child[chosen[i]][0].size() ; j ++){
if(isChosen[child[chosen[i]][0][j]]){
questions.pb(child[chosen[i]][0][j]);
}
}
}
for(int i = 0 ; i < questions.size() ; i ++){
cout << "? " << questions[i] << " " << lca[questions[i]][0][0] << endl;
}
cout << "!" << endl;
for(int i = 0 ; i < questions.size() ; i ++){
int a, b;
cin >> a >> b >> a >> b;
distancia[questions[i]][0][0] = a;
}
lca[roots[0]][0][0] = roots[0];
distancia[roots[0]][0][0] = 0;
for(int x = 1 ; x < 20 ; x ++){
for(int i = 1 ; i <= n ; i++){
lca[i][x][0] = lca[lca[i][x-1][0]][x-1][0];
distancia[i][x][0] = distancia[lca[i][x-1][0]][x-1][0] + distancia[i][x-1][0];
//lca[i][x][1] = lca[lca[i][x-1][1]][x-1][1];
}
}
vector<pair<int, int> > queries;
for(int i = 0 ; i < t ; i ++){
int a, b;
cin >> a >> b;
queries.pb({a, b});
}
for(int i = 0 ; i < t ; i ++){
cout << getDist(queries[i].ff, queries[i].ss, 0) << " " << getDist(queries[i].ff, queries[i].ss, 0) << "\n";
}
cout << endl;
int ready;
//~ cin >> ready;
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 0
Wrong Answer
time: 2ms
memory: 33040kb
input:
min(max(?,max(min(?,min(?,?)),?)),min(max(?,?),max(?,?)))
output:
!
result:
wrong answer 1st lines differ - expected: '6', found: ''
Subtask #2:
score: 0
Skipped
Dependency #1:
0%
Subtask #3:
score: 0
Wrong Answer
Test #57:
score: 0
Wrong Answer
time: 8ms
memory: 32596kb
input:
min(?,min(?,min(min(min(min(?,min(min(?,min(?,min(?,min(min(?,min(?,min(min(?,min(min(?,min(?,min(?,min(min(?,min(min(?,min(min(?,min(?,min(?,min(min(?,min(min(?,min(min(min(min(?,min(min(min(min(min(?,min(min(?,min(min(?,min(?,min(?,min(?,min(min(?,min(?,min(?,min(?,min(min(?,min(?,min(?,min(min(mi...
output:
!
result:
wrong answer 1st lines differ - expected: '1', found: ''
Subtask #4:
score: 0
Skipped
Dependency #2:
0%
Subtask #5:
score: 0
Skipped
Dependency #1:
0%