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Cod sursa(job #528065)
#include<fstream>
#include<algorithm>
using namespace std;
int i,j,n,m,a[50002],b[50002],c[50002],poz,rez=10000000;
int main()
{
ifstream f("secv.in");
ofstream g("secv.out");
f>>n;
for(i=1;i<=n;i++)
f>>a[i],b[i]=a[i];
sort(b,b+n);
m=1;
c[0]=b[0];
for(i=1;i<=n;i++)
if(b[i]!=b[i-1])
c[m++]=b[i];
for(i=n;i>=1;i--)
if(a[i]==c[m-1])
for(poz=i,j=m-2;j>=1;j--)
{
while(poz>=0&&a[poz]!=c[j])
poz--;
if(poz<=0)
break;
if(j==1&&rez>i-poz+1)
rez=i-poz+1;
}
g<<rez;
return 0;
}