Cod sursa(job #759620)

Utilizator test13test13 test13 Data 18 iunie 2012 19:19:47
Problema Elementul majoritar Scor 90
Compilator cpp Status done
Runda Arhiva educationala Marime 0.99 kb
#include <cstdio>
#include <algorithm>
#include <vector>
using namespace std;
#define LIM 666013

vector<int>h[LIM];
int n;

int hash(int x){
    return x%LIM;
}

void insert(int x){
    int p=hash(x);
    h[p].push_back(x);
}

void elmaj(){
    int p = 1,el ,sol ,nr = 1;

    for(int i=2;i<LIM;i++)
    if(h[i].size()>h[p].size())p=i;
    sort(h[p].begin(),h[p].end());
   // for(int i=0;i<h[p].size();i++)printf("%d ",h[p][i]);

    el = h[p][0]; sol = 1;
    for(int i=1;i<h[p].size();i++)
    if(h[p][i]==h[p][i-1])
    {
        nr++;
        if(nr>sol)
        {
            sol = nr;
            el = h[p][i];
        }
    } else nr = 1;
    if(sol>n/2)printf("%d %d\n",el,sol); else printf("-1\n");
}

int main(){
    int x;
    freopen("elmaj.in","r",stdin);
    freopen("elmaj.out","w",stdout);
        scanf("%d",&n);
        for(int i=1;i<=n;i++)
        {
            scanf("%d",&x);
            insert(x);
        }
    elmaj();
        return 0;
}