Cod sursa(job #1919616)
Utilizator | Marius Radu waren4 | Data | 9 martie 2017 20:16:04 |
---|---|---|---|
Problema | Elementul majoritar | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.47 kb |
#include <iostream>
#include <fstream>
using namespace std;
int main()
{
ifstream f("elmaj.in"); ofstream g("elmaj.out");
int n,i,k,x,a[1000010];
f>>n;
for(i=0;i<n;i++)
{
f>>a[i];
}
x=a[0];
k=1;
for(i=1;i<n;i++)
{
if (k==0) {k=1; x=a[i];}
else if(x==a[i]) {k++;} else k--;
}
k=0;
for(i=0;i<n;i++) if (a[i]==x) {k++;}
if (k>=n/2+1) {g<<x<<' '<<k;} else g<<-1;
return 0;
}