#include<stdio.h>
int main(){
    int n, i;
    printf("Enter the number of altitude records(n):");
    scanf("%d", &n);
    if(n < 0){
        printf("Invalid inpuut\n");
        return 1;
    }
    if(n == 0){
        printf("No altitude to process.\n");
        return 0;
    }
    int altitude;
    int max_altitude;
    printf("Enter the %d altitude records:\n", n);
    for(i = 0; i < n; i++){
        scanf("%d", &altitude);
    }
    max_altitude = altitude;
    for(i = 1; i < n; i++){
        if(altitude > max_altitude){
            max_altitude = altitude;
        }
    }
    printf("the heighest altitude reached is: %d\n", max_altitude);
    return o;
}