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Cod sursa(job #855008)
#include<fstream>
using namespace std;
ifstream f("elmaj.in");
ofstream g("elmaj.out");
int n,t,a[1000001],b[1000001],m=0,i,j,nr,p=0;
int main()
{ f>>n;
for(i=1;i<=n;i++) { f>>a[i];
t=1;
for(j=1;j<=m;j++) if(a[i]==b[j]) t=0;
if(t==1) { m++;
b[m]=a[i];
}
}
for(j=1;j<=m;j++) { nr=0;
for(i=1;i<=n;i++) if(a[i]==b[j])nr++;
if(nr>=n/2+1) { g<<b[j]<<" "<<nr;
p=1;
}
}
if(p==0) g<<"-1";
return 0;
}