#include<stdio.h>
#include<string.h>
void printPyramid(char *str){
    if (str == NULL || strlen(str) == 0){
        printf("Error: Input name is empty.\n");
        return;
    }
    int len = strlen(str);
    for (int i = 0; i < len; i++){
        for (int j = 0; j <= (len-i); j++){
            printf(" ");
        }
        for (int j = 0; j <= i; j++){
            printf("%c"+" ", str[j]);
        }
        printf("\n");
    }
}
int main(){
    char name[100];
    fgets(name, sizeof(name), stdin);
    name[strcspn(name, "\n")] = 0;
    printPyramid(name);
    return 0;
}