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Submission #434612

# Submission time Handle Problem Language Result Execution time Memory
434612 2021-06-21T13:05:22 Z ismoilov Highway Tolls (IOI18_highway) C++14
5 / 100
 17 ms 1164 KB 
#include "highway.h"
#include <bits/stdc++.h>
using namespace std;

map <pair<int, int>, int> mp;
vector <int> g[1001];
vector<int> to_ask(1001);
int now;
int check(int x, int p){
    bool ok = 0;
    for(auto y : g[x]){
        if(p == y)
            continue;
        to_ask[mp[{min(x, y), max(y, x)}]] = 1;
      //  cout << x << " " << y << " " << ask(to_ask) <<" " << now << " " <<"\n";
        int noww = ask(to_ask);
        if(now == noww)
            to_ask[mp[{min(x, y), max(y, x)}]] = 0;
        else{
            now = noww;
            return check(y, x);
        }
    }
    return x;
}

void find_pair(int N, vector<int> u, vector<int> v, int a, int b) {
 int   m = u.size();
 to_ask.resize(m);
  for(int i = 0; i < m; i ++){
    g[u[i]].push_back(v[i]);
    g[v[i]].push_back(u[i]);
    mp[{min(u[i], v[i]), max(u[i], v[i])}] = i;
  }
  now = ask(to_ask);
  answer(0, check(0, 0));
}

Compilation message

highway.cpp: In function 'int check(int, int)':
highway.cpp:10:10: warning: unused variable 'ok' [-Wunused-variable]
   10 |     bool ok = 0;
      |          ^~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 1 ms 200 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 1 ms 328 KB Output is correct
12 Correct 2 ms 200 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 328 KB Output is correct
2 Runtime error 11 ms 772 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #3
0 / 6.0

# Verdict Execution time Memory Grader output
1 Runtime error 17 ms 1164 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #4
0 / 33.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 328 KB Output is incorrect: {s, t} is wrong.
2 Halted 0 ms 0 KB -

Subtask #5
0 / 18.0

# Verdict Execution time Memory Grader output
1 Runtime error 15 ms 832 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Runtime error 9 ms 820 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -