#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#define max 100
#define maxl 101
void reverse(int n,char *sentence)
{
    if(n<0){
        printf("Invalid input");
        return 0;
    }
    char*stack[max];
    int top=-1;
    char tem[max];
    strcpy(temp,sentence);
    char*word=strtok(temp," ");
    while (word!=NULL)
    {
        if(top+1>=n)break;
        stack[++top]=word;
        word=strtok(NULL," ");
    }
    for(int i=top;i>=0;i--){
        printf("%s",stack[i]);
        if(i!=0)
        printf(" ");
    }
    printf("\n");
}
int main()
{
int n;
char sentence [maxl];
scanf("%d",&n);
getchar();
fgets(sentence,max,stdin);
size_t len =strlen
}