IMPA/p10424/p10424.cpp

#include <algorithm>
#include <array>
#include <bitset>
#include <climits>
#include <cstring>
#include <iostream>
#include <iomanip>
#include <list>
#include <map>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <utility>
#include <vector>
#include <queue>

using namespace std;

#define rep(i, a, b) for(int i = (a); i < int(b); ++i)
#define repto(i, b) rep(i, 0, b)
#define trav(it, v) for(typeof((v).begin()) it = (v).begin();   \
                it != (v).end(); ++it)

typedef unsigned int nat;

const int imax = INT_MAX;
const int umax = UINT_MAX;

nat get_number(string str)
{
    nat sum = 0;
    for(auto c : str)
    {
        if(!isalpha(c))
            continue;
        sum += toupper(c) - 64;
    }
    while(sum/10)
    {
        nat new_sum = 0;
        while(sum/10)
        {
            new_sum += sum % 10;
            sum /= 10;
        }
        new_sum += sum % 10;
        sum = new_sum;
    }
    return sum;
}

bool solve(nat tc)
{
    string first, second;

    getline(cin, first);
    getline(cin, second);

    if(!first.length())
        return false;

    nat first_num = get_number(first);
    nat second_num = get_number(second);

    cout << fixed << setprecision(2) << min(first_num, second_num)/(float)max(first_num, second_num)*100 << " %" << endl;

    return true;
}

int main()
{
	//Set to 0 if you need to read the number of cases first
	nat n = 1 << 30;
	if(!n) cin >> n;
	for(nat i = 1; i <= n && solve(i); ++i);

	return 0;
}