Lukuvälit

input/code.cpp: In function 'll calc(ll, bool)':
input/code.cpp:33:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (ll i = 0; i <= inputStr.size() - 1; i++) {
                 ~~^~~~~~~~~~~~~~~~~~~~~~
input/code.cpp:40:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (ll b = 0; b < inputStr.size()-i+1; b++) {
                    ~~^~~~~~~~~~~~~~~~~~~~~
input/code.cpp:34:8: warning: variable 'roundedUp' set but not used [-Wunused-but-set-variable]
   bool roundedUp = false;
        ^~~~~~~~~
input/code.cpp:31:6: warning: unused variable 'zeroes' [-Wunused-variable]
   ll zeroes = inputStr.size() - 1;
      ^~~~~~
input/code.cpp: At global scope:
input/code.cpp:69:9: error: '::main' must return 'int'
 ll main()
         ^

#include<iostream>
#include<vector>
#include <string> 
#include <math.h> 
using namespace std;

typedef  long long ll;

ll btd(ll n) // Desimaalit binääriksi
{
	ll num = n;
	ll dec_value = 0;

	ll base = 1;

	ll temp = num;
	while (temp) {
		ll last_digit = temp % 10;
		temp = temp / 10;

		dec_value += last_digit * base;

		base = base * 2;
	}

	return dec_value;
}
	
ll calc(ll input, bool roundUp) {
	string inputStr = to_string(input);
	 ll zeroes = inputStr.size() - 1;
	ll rounded = 0;
	for (ll i = 0; i <= inputStr.size() - 1; i++) {
		bool roundedUp = false;
		ll cur = 0;
		if (!roundUp) {
			char curChar = inputStr[i];
			cur = (ll)curChar - 48;
			if (cur > 1) {  // eg. 200 ->  111
				for (ll b = 0; b < inputStr.size()-i+1; b++) {
					inputStr[inputStr.size()-b] = 1+48;
					cur = 1;
				}
			}
			rounded += cur * pow(10, inputStr.size() - 1 - i);
		}
		else {
			char curChar = inputStr[inputStr.size()-i-1];
			cur = (ll)curChar - 48;
			if (cur > 1) {
				ll temp = input;
				temp /= pow(10, i+1);
				temp *= pow(10, i+1);
				temp = temp + pow(10, i+1);
				inputStr = to_string(temp);
				input = temp;
				roundedUp = true;
			}
		}
	}
	if (roundUp) {
		rounded = input;
	}
  	return rounded;
}



ll main()
{
	ll rows = 0;
	vector< vector<ll > >  inputs;
	cin >> rows;

	/*for (ll i = 0; i < rows+1; i++) {
		ll input1 = i;
		ll input2 = rows;

		vector<ll> input = { input1, input2 };
		inputs.push_back(input);
	}*/


	for (ll i = 0; i < rows; i++) {
		ll input1=0;
		ll  input2=0;

		cin >> input1 >> input2;
		vector<ll > input = { input1, input2 };
		inputs.push_back(input);
	}
	for (ll i = 0; i < rows; i++) {
		ll result = 0;
		
		ll roundedA = calc(inputs[i][0], true);
		ll roundedB = calc(inputs[i][1], false);
		ll a = btd(roundedA);
		ll b = btd(roundedB); 
		result = b - a + 1;
		
		if (a>b) {
			result = 0;
		}
		cout << result <<  endl;
		//cout << result << "   A is " << inputs[i][0] << "  B is " << inputs[i][1] << endl;
	}
}