50172. Stairs
難度：2.5/51
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57#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void print_stars(int cnt){
for(int i = 0; i < cnt; i++) printf("*");
}
int main(){
int now_len = 0;
int is_hor = 1;
int flag = 0;
char last = '$';
char s[128] = {0};
while(scanf("%s", s) != EOF){
int n = strlen(s);
if(is_hor){
if(flag == 0){
printf("%s\n", s);
now_len += n - 1;
flag = 1;
}
else if(s[0] != last){
printf("\n");
print_stars(now_len);
printf("%s\n", s);
now_len += n - 1;
}
else{
printf("%s\n", s + 1);
now_len += n - 1;
}
}
else{
if(s[0] != last){
for(int i = 0; i < n; i++){
print_stars(now_len);
printf("%c", s[i]);
if(i != n - 1) printf("\n");
}
}
else{
for(int i = 1; i < n; i++){
print_stars(now_len);
printf("%c", s[i]);
if(i != n - 1) printf("\n");
}
}
}
last = s[n - 1];
is_hor ^= 1;
}
}