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Submission #582421

# Submission time Handle Problem Language Result Execution time Memory
582421 2022-06-23T18:06:51 Z Vanilla Highway Tolls (IOI18_highway) C++17
5 / 100
 120 ms 7716 KB 
#include <bits/stdc++.h>
#include "highway.h"
typedef long long int64;
using namespace std;
const int maxn = 9e4 + 2;
const int maxm = 13e4 + 2;
vector <pair <int, int> > ad [maxn];
vector <int> w;
int n;
int64 len, a, b, lastlen = 1e9;
bool done = 0;

void dfs (int u, int p, int64 d = 0) {
  if (done || u > lastlen) return;
  if (d == len) {
    lastlen = ask(w) / b;
    if (lastlen == len){
      answer(0, u);
      done = 1;
    }
    return;
  }
  for (pair <int, int> v: ad[u]) {
    if (v.first == p) continue;
    w[v.second] = 1;
    dfs(v.first, u, d + 1);
    if (lastlen == d) lastlen = 1e9;
    w[v.second] = 0;
  }
}

void find_pair(int N, vector<int> u, vector<int> v, int A, int B) {
  int m = u.size();
  n = N, a = A, b = B;
  for (int i = 0; i < m; i++){
    ad[u[i]].push_back({v[i], i});
    ad[v[i]].push_back({u[i], i});
  }
  for (int i = 0; i < m; i++){
    w.push_back(0);
  }
  len = ask(w) / a;
  dfs(0, -1);
  assert(done);
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2384 KB Output is correct
2 Correct 3 ms 2384 KB Output is correct
3 Correct 1 ms 2384 KB Output is correct
4 Correct 2 ms 2384 KB Output is correct
5 Correct 1 ms 2384 KB Output is correct
6 Correct 2 ms 2384 KB Output is correct
7 Correct 1 ms 2384 KB Output is correct
8 Correct 2 ms 2384 KB Output is correct
9 Correct 1 ms 2384 KB Output is correct
10 Correct 1 ms 2384 KB Output is correct
11 Correct 2 ms 2384 KB Output is correct
12 Correct 2 ms 2384 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2384 KB Output is correct
2 Correct 18 ms 3000 KB Output is correct
3 Runtime error 120 ms 7716 KB Execution killed with signal 13
4 Halted 0 ms 0 KB -

Subtask #3
0 / 6.0

# Verdict Execution time Memory Grader output
1 Runtime error 14 ms 5840 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #4
0 / 33.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 4816 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #5
0 / 18.0

# Verdict Execution time Memory Grader output
1 Runtime error 20 ms 3064 KB Execution killed with signal 13
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Runtime error 19 ms 6068 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -