Failing all the test cases except test case 3. What is the problem in this code?

#1

#include
using namespace std;
int N=10000000;

int max(int a[], int n){
int temp=0;
for(int i=0; i<=(n-1); i++){
for(int j=(i+1); j<=n; j++){
if(a[j]>a[i]){
temp=a[j];
a[j]=a[i];
a[i]=temp;
}
}
}
return a[0];
}

int main() {
cin>>N;
int a[N];
for(int i=0; i<N; i++){
cin>>a[i];
}
cout<<max(a, N);
return 0;
}

#2

Hello @sb1251224_6919c19fccd96630,

You are iterating from i+1 to n instead of i+1 to n-1,
change this:

for(int j=(i+1); j<=n; j++){

to

for(int j=(i+1); j<n; j++){

#3

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