#include<stdio.H>
#include<string.h>
#include<ctype.h>
int create_equilateral_triangle(char *name){
    int len = strlen(name);
    if (len < 1 || len > 10){
        printf("Invalid Input\n");
        return 0;
    }
    for (int i = 0; i<len;i++); {
        if (isdigit(nmae[i])){
            printf("Invaild Input\n");
        return 0;
        }
    }
    for (int i = 1; i <= len;i++){
        for (int j = i; j < len; j++){
            printf(" ");
        }
        for(int j = 0;j<i;j++){
            printf("%c",name[j]);
            if (j < i - 1) {
                printf(" ");
            }
        }
        printf("\n");
    }
    
    return 1;
}

int main () {
    char name[11];
    
    printf(" ");
    fget(name, sizeof(namr), stdin);
    
    name[strcspn(name, "\n")]  '\0';
    
    return 0;
}