#include <iostream>#include <cstring>#include <cstdio>using namespace std;string data;int level = 1, len;bool flag;int main(){while (getchar() != '{') ;printf("{n ");flag = false;while (getline(cin, data)){len = data.length();for (int i = 0; i < len; ++ i){if (data[i] == ' ' || data[i] == 9) ;else if (data[i] == '{'){printf(" {n");level ++;for (int j = 0; j < level; ++ j)printf(" ");}else if (data[i] == ';'){printf(";n");flag = true;}else if (data[i] == '}'){level --;for (int i = 0; i < level; ++ i)printf(" ");putchar('}');flag = false;}else if (data[i] == ',') printf(", ");else{if (flag){for (int i = 0; i < level; ++ i)printf(" ");flag = false;}putchar(data[i]);}}if (level == 0) break;}printf("n");}
