#include <stdio.h>
#include <unistd.h>
#include <stdbool.h>

const int indent = 2;
int scope = 0;

void print_indent() {
    for (int i = 0; i < indent * scope; i++) {
        putchar(' ');
    }
}

void ln() {
    putchar('\n');
    print_indent();
}


int main() {
    bool in_string = false;
    bool escape_next = false;

    char c;
    while (read(STDIN_FILENO, &c, 1) > 0) {
        switch (c) {
        case '\"':
            if (!escape_next) {
                in_string = !in_string;
            }

            putchar(c);
            break;
        case '\\':
            escape_next = true;

            putchar(c);
            break;
        case '{':
        case '[':
            putchar(c);
            scope++;

            ln();
            break;
        case '}':
        case ']':
            scope--;
            ln();

            putchar(c);
            break;
        case ',':
            putchar(c);
            if (!in_string) {
                ln();
            }

            break;
        case ':':
            putchar(c);
            if (!in_string) {
                putchar(' ');
            }

            break;
        default:
            putchar(c);
            break;
        }
    }

    return 0;
}