poj1006

枚举

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//poj1006

#include <iostream>

using namespace std;



int        a, b, c, d, t, dd;



void work()

{

    a %= 23;

    b %= 28;

    c %= 33;

    dd = d;

    while (1)

    {

        d++;

        if (d % 23 == a && d % 28 == b && d % 33 == c)

        {

            printf("Case %d: the next triple peak occurs in %d days.\n", t, d - dd);

            return;

        }

    }

}



int main()

{

    //freopen("t.txt", "r", stdin);

    t = 0;

    while (cin >> a >> b >> c >> d)

    {

        t++;

        if (a == -1 && b == -1 && c == -1 && d == -1)

            break;

        work();

    }

    return 0;

}