Find indexes of max numbers in array

i have a program in c that finds the first and second max in an array, but i want to get the indexes of these elements. Here is my code:

#include <stdio.h>
int main(){
    int max1,max2,n;
    scanf("%d",&n);
    int a[n],i;
    int i_m1,i_m2;
    i_m1 = i_m2=0;
    for(i = 0;i < n;i++){
        scanf("%d",&a[i]);
    }
    max1 = max2 = 0;
    for(i = 0;i < n;i++){
        if(a[i]>max1){
            max1=a[i];
            //i_m1++;
        } else if(a[i]>max2 && a[i]<max1){
            max2=a[i];
            //i_m2++;
        }
    }
    printf("%d %d\n",max1,max2);
    //printf("%d %d\n",i_m1,i_m2);
    for(i = 0;i < n;i++){
        printf("%d ",a[i]);
    }
    return 0;
}

I first enter the number of elements in the array then the array.
For example if i have an array

number of elements: 5
elements in array: 
3 4 2 5 1
indexes:
0 1 2 3 4
max1=5, max2=4
i_m1=3, i_m2=1

How can i get the indexes i_m1 and i_m2 ?

>Solution :

You’re thinking too hard about what to do with i as evidenced by the commented out i_m1++ and i_m2++.

If max1=a[i]; then it follows that i_m1 = i; and same for max2/i_m2.