oj.uz

Submission #874639

# Submission time Handle Problem Language Result Execution time Memory
874639 2023-11-17T13:07:40 Z Iliya_ File Paths (BOI15_fil) C++17
100 / 100
 183 ms 69228 KB 
//IN THE NAME OF GOD
#include<bits/stdc++.h>
#pragma GCC optimize("O2,unroll-loops")
#define endl        '\n'
#define F           first
#define S           second
#define all(x)      x.begin(),x.end()
#define pb          push_back
using namespace std;
typedef long long ll; 

#define int long long 
const int N = 2e6+7; 
vector<int> g[N], jad;
int dist[N], mos[N], dor[N], ans[N]; 
int n,m,k,s; 

void dfs2(int r, int v, bool add){ // dor 
     if (v > n) return; 
     dor[dist[v]-dist[r]+s] += (add ? 1 : -1); 
     for(int u : g[v]) dfs2(r,u,add);
}

void dfs(int v){
     if (v <= n){
          jad.pb(v); 
          dfs2(v,v,1);
          for(int u : g[v]) dfs(u); 
          dfs2(v,v,0); 
          jad.pop_back();
     }
     else{
          // ziad
          for(int par : jad){ // az koja mastaghim oomadim
               int hav = dist[v] - dist[par] + s; 
               if (k-hav >= 0 && mos[k-hav]) ans[v-n] = 1; 
          }
          // kam
          int rem = k - dist[v]; 
          for(int i=1; i*i <= rem; i++){
               if (rem%i) continue; 
               if (dor[rem/i] || dor[rem/(rem/i)]) ans[v-n] = 1; 
          }
     }
}

int32_t main(){
     ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);

     cin >> n >> m >> k >> s; s++;
     dist[0] = 1;
     mos[1] = 1;  
     for(int i=1; i<=n; i++){
          int fa, megh; cin >> fa >> megh; 
          dist[i] = dist[fa] + megh + 1; 
          g[fa].pb(i); 
          mos[dist[i]] = 1; 
     }
     for(int i=n+1; i<=n+m; i++){
          int fa, megh; cin >> fa >> megh;
          dist[i] = dist[fa] + megh;  
          if (dist[i] == k) ans[i-n] = 1;
          g[fa].pb(i);
     }
     dfs(0); 
     for(int i=1; i<=m; i++) cout << (ans[i] ? "YES" : "NO") << endl;

     return 0;
}

Subtask #1
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 54480 KB Output is correct
2 Correct 13 ms 54364 KB Output is correct
3 Correct 12 ms 54364 KB Output is correct
4 Correct 16 ms 54484 KB Output is correct
5 Correct 22 ms 68700 KB Output is correct
6 Correct 15 ms 66648 KB Output is correct
7 Correct 20 ms 66836 KB Output is correct
8 Correct 15 ms 68700 KB Output is correct
9 Correct 14 ms 68700 KB Output is correct
10 Correct 13 ms 54460 KB Output is correct
11 Correct 14 ms 54364 KB Output is correct
12 Correct 18 ms 54364 KB Output is correct

Subtask #2
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 69000 KB Output is correct
2 Correct 21 ms 68956 KB Output is correct
3 Correct 21 ms 69008 KB Output is correct
4 Correct 22 ms 68952 KB Output is correct
5 Correct 138 ms 69160 KB Output is correct
6 Correct 183 ms 69228 KB Output is correct
7 Correct 88 ms 68924 KB Output is correct
8 Correct 115 ms 69112 KB Output is correct
9 Correct 25 ms 66768 KB Output is correct
10 Correct 22 ms 68860 KB Output is correct
11 Correct 15 ms 54660 KB Output is correct
12 Correct 148 ms 59176 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 54480 KB Output is correct
2 Correct 13 ms 54364 KB Output is correct
3 Correct 12 ms 54364 KB Output is correct
4 Correct 16 ms 54484 KB Output is correct
5 Correct 22 ms 68700 KB Output is correct
6 Correct 15 ms 66648 KB Output is correct
7 Correct 20 ms 66836 KB Output is correct
8 Correct 15 ms 68700 KB Output is correct
9 Correct 14 ms 68700 KB Output is correct
10 Correct 13 ms 54460 KB Output is correct
11 Correct 14 ms 54364 KB Output is correct
12 Correct 18 ms 54364 KB Output is correct
13 Correct 21 ms 69000 KB Output is correct
14 Correct 21 ms 68956 KB Output is correct
15 Correct 21 ms 69008 KB Output is correct
16 Correct 22 ms 68952 KB Output is correct
17 Correct 138 ms 69160 KB Output is correct
18 Correct 183 ms 69228 KB Output is correct
19 Correct 88 ms 68924 KB Output is correct
20 Correct 115 ms 69112 KB Output is correct
21 Correct 25 ms 66768 KB Output is correct
22 Correct 22 ms 68860 KB Output is correct
23 Correct 15 ms 54660 KB Output is correct
24 Correct 148 ms 59176 KB Output is correct
25 Correct 20 ms 68784 KB Output is correct
26 Correct 20 ms 68956 KB Output is correct
27 Correct 20 ms 69016 KB Output is correct
28 Correct 19 ms 68880 KB Output is correct
29 Correct 135 ms 69204 KB Output is correct
30 Correct 171 ms 69228 KB Output is correct
31 Correct 110 ms 69116 KB Output is correct
32 Correct 109 ms 69120 KB Output is correct
33 Correct 20 ms 68904 KB Output is correct
34 Correct 19 ms 68872 KB Output is correct
35 Correct 15 ms 54620 KB Output is correct
36 Correct 166 ms 56848 KB Output is correct