Reading an input of mixed unicode characters and integers

Question

I am trying to read the following input from user where the input looks like :

3
5 斤 2 两
7 斤 3 两
6 斤

to solve this question : https://uva.onlinejudge.org/external/125/12555.pdf

However, I have no success so far. I have googled a lot, but I am not able to put it together and I get wrong inputs everytime. Moreover, I am not sure if I am passing the inputs correctly as whether the console supports Unicode or not, which again is an overhead for me, as I am already not confident about my Unicode usage. Please help.

I tried this :

int main()
{
    int t,a,b;
    wchar_t ignore;
    float res;

    cin >> t; //number of test cases
    for(int k=1;k<=t;k++)
    {
        a=b=0;
        cin >> a;
        wcin >> ignore;

        if(cin.peek() != '\n')
        {
            cin >>  b;
            wcin >> ignore;
        }


        cout << "a : " << a << " b : " << b << endl;
    }
    return 0;
}

My output :

a : 5 b : 0
a : 0 b : 0
a : 0 b : 0

EDIT I tried a little variation as well, but still wrong inputs :

int main()
{
    int t,a,b;
    wchar_t ignore;
    float res;

    wcin >> t; //number of test cases
    cout << t << endl;
    for(int k=1;k<=t;k++)
    {
        a=b=0;
        wcin >> a;
        wcin >> ignore;

        if(wcin.peek() != '\n')
        {
            wcin >>  b;
            wcin >> ignore;
        }


        cout << "a : " << a << " b : " << b << endl;
    }
    return 0;
}

EDIT2 This worked for me on a Ubuntu machine, but the online judge is still rejecting my solution. Also on my Windows bash, I am still getting the wrong output:

#include <iostream>
#include <locale>
#include <clocale>

using namespace std;

int main()
{
    int t,a,b;
    wchar_t ignore;
    std::locale loc ("");
    std::locale::global (loc);
    std::setlocale(LC_ALL, NULL);
    std::setlocale(LC_ALL, "");    
    wcin.imbue (loc);

    wcin >> t; //number of test cases
    for(int k=1;k<=t;k++)
    {
        a=b=0;
        wcin >> a;
        wcin >> ignore;

        if(wcin.peek() != L'\n')
        {
            wcin >>  b;
            wcin >> ignore;
        }


        cout << "Case " << k << ": " << a*0.5+b*0.05 << endl;
    }
    return 0;
}