dr4_1zad

#include <iostream>
using namespace std;

const size_t maxNum = 100;

bool isNum(char c) {
    char digit=('0' <= c && c <= '9');
    return digit;
}

int strlen(char* arr) {
    int counter = 0;
    while (arr[counter] != '\0') {
        ++counter;
    }
    return counter;
}

bool validDoubleNumbers(char* arr) {
    size_t len = strlen(arr);
    bool num = false;
    bool dot = false;

    for (size_t i = 0; i < len; ++i) {
        if (dot == false && (arr[i] == '.' || arr[i] == ','))
            dot = true;
        else if (isNum(arr[i]))
            num = true;
        else
            num = false;
    }

    return (num == true && dot == true);
}

int main() {
    int k; //[3,50]
    cin >> k;
    for (size_t i = 0; i <= k; ++i) {
        char str[maxNum];
        cin.getline(str, maxNum);
        cout << validDoubleNumbers(str);
    }
}