poj3543

简单题

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
using namespace std;

int main()
{
    //freopen("t.txt", "r", stdin);
    int a, b;
    scanf("%d%d", &a, &b);
    if (a == 0 && b == 0)
    {
        printf("Impossible\n");
        return 0;
    }
    if (a > b)
        swap(a, b);
    int i = 1, ans = 0;
    while (1)
    {
        int d = i * i;
        if (d > a + b)
            break;
        if (a >= d / 2)
            ans = i;
        i++;
    }
    printf("%d\n", ans);
    return 0;
}