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Submission #409645

# Submission time Handle Problem Language Result Execution time Memory
409645 2021-05-21T09:20:09 Z Atill83 CONSUL (info1cup19_consul) C++14
100 / 100
 37 ms 460 KB 
#include "grader.h"
#include <bits/stdc++.h>
using namespace std;
int num[60005];

unordered_map<int, int> mp;

void solve(int n)
{
    memset(num, -1, sizeof(num));
    mt19937 rng(time(NULL));
    int q = (n <= 50 ? 50 : 60);
    while(q >= 2){
        int idx = rng() % n + 1;
        if(num[idx] == -1){
            q--;
            num[idx] = kth(idx);
        }
        auto u = mp.find(num[idx]);
        int cn;
        if(u == mp.end()){
            cn = cnt(num[idx]);
            q--; 
        }else{
            cn = (*u).second;
        }
        if(cn > n / 3){
            say_answer(num[idx]);
            return;
        }
    }
    
    say_answer(-1);
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 456 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 456 KB Output is correct
2 Correct 7 ms 456 KB Output is correct

Subtask #3
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 456 KB Output is correct
2 Correct 24 ms 460 KB Output is correct
3 Correct 7 ms 456 KB Output is correct
4 Correct 11 ms 456 KB Output is correct
5 Correct 24 ms 456 KB Output is correct
6 Correct 26 ms 456 KB Output is correct
7 Correct 29 ms 456 KB Output is correct
8 Correct 26 ms 456 KB Output is correct
9 Correct 33 ms 456 KB Output is correct
10 Correct 37 ms 456 KB Output is correct
11 Correct 34 ms 456 KB Output is correct
12 Correct 26 ms 456 KB Output is correct
13 Correct 31 ms 456 KB Output is correct
14 Correct 25 ms 456 KB Output is correct