#include <stdio.h>
#include <stdint.h>
#include <string.h>
#define MAX 10
void process_stack(int n) {
// Your logic here
int Arr_Stack[MAX];
int top = -1;
char str[10] ;
int val;
while(n)
{
scanf("%s",str);
if(strcmp(str,"push")==0)
{
scanf("%d",&val);
if(top>=MAX-1)
{
printf("Stack Overflow\n");
}else{
Arr_Stack[++top]=val;
}
}else if(strcmp(str,"pop")==0)
{
if(top==-1)
{
printf("Stack Underflow\n");
}else{
printf("%d\n",Arr_Stack[top--]);
}
}
n--;
}
}
int main() {
int n;
scanf("%d", &n);
getchar(); // Consume newline after number
process_stack(n);
return 0;
}
Input
5 push 10 push 20 pop pop pop
Expected Output
20 10 Stack Underflow