On incresing the size of arrays the code is giving segementation fault core dumped.A/c to constraints the size of arra must me 1000000

#1 
#include<iostream>
#include<climits>
using namespace std;

int main(){
    int n;
    cin>>n;
    int a[100];
    int left_max[100];
    int maax=INT_MIN;
    for (int i = 0; i < n; i++)
    {
        cin>>a[i];
        maax=max(a[i],maax);
        left_max[i]=maax;

    }
    
    int right_max[100];
    maax=INT_MIN;
    for ( int i = n-1; i>=0; i--)
    {
        maax=max(a[i],maax);
        right_max[i]=maax;
    }
    int water_saved=0;
    for (int  i = 0; i < n; i++)
    {
        int mini=min(left_max[i],right_max[i]);
        water_saved+=a[i]-mini;
    }
    
        cout<<abs(water_saved);
    
    return 0;
}
#2

@sagar_aggarwal hey make these changes in your code
int n;
cin>>n;
int a[n];
int left_max[n];
int right_max[n];

#3

after submitting value of n as 1000000 program is getting closed by itself after applying your changes. How can i declare arrays globally?

#4

@sagar_aggarwal you can declare arrays globally outside main function.

#5

Can you please edit my code and share it with me

#6

@sagar_aggarwal see the code