Cod sursa(job #2016773)

Utilizator MaligMamaliga cu smantana Malig Data 30 august 2017 13:02:48
Problema Elementul majoritar Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.89 kb
#include <iostream>
#include <fstream>
#include <queue>
#include <vector>
#include <cstdlib>
#include <time.h>

#define ll long long
#define ull unsigned long long
#define pb push_back
using namespace std;
ifstream in("elmaj.in");
ofstream out("elmaj.out");

const int NMax = 1e6 + 5;
const int inf = 1e9 + 5;

int N;
int v[NMax];

int main() {
    in>>N;
    for (int i=1;i <= N;++i) {
        in>>v[i];
    }

    srand(time(0));
    bool found = false;
    for (int k=1;k <= 10;++k) {
        int val = v[rand()%N + 1], nr = 0;
        for (int i=1;i <= N;++i) {
            if (v[i] == val) {
                ++nr;
            }
        }

        if (nr > N/2) {
            found = true;
            out<<val<<' '<<nr<<'\n';
            break;
        }
    }

    if (!found) {
        out<<"-1\n";
    }

    in.close();out.close();
    return 0;
}