#include<iostream>
#include<climits>
using namespace std;
int main(){
    int arr[]={10,20,30,40,50};
    
    int f=INT_MIN;
    int s=INT_MIN;
    
    int n = sizeof(arr) / sizeof(arr[0]);

    for(int i=0;i<arr.length;i++){
        if(arr[i]>f){
            s=f;
            f=arr[i];
        }
        else if(arr[i]>s && arr[i]!=f){
            s=arr[i];
        }
    }
    cout<<s;
}