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62 lines
1.1 KiB
C++
62 lines
1.1 KiB
C++
#include <iostream>
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#include <cmath>
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using std::cin;
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using std::cout;
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const char endl = '\n';
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long long a, b, d, m, ans;
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int main() {
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std::ios::sync_with_stdio(false);
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cin >> a >> b;
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d = a * a - b * 4;
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if (d == 0) {
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cout << "inf" << endl;
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exit(0);
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} else if (d < 0) {
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d *= -1;
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m = std::sqrt(d);
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for (long long q = 1; q <= m; q++) {
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if (d % q == 0) {
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long long p = d / q;
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long long x = p - q - 2 * a,
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y = p + q;
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if (x % 4 || y % 4) continue;
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x /= 4, y /= 4;
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if (x >= 0 && y >= x) ans++;
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}
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}
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} else { // d > 0
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m = std::sqrt(d);
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for (long long q = 1; q <= m; q++) {
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if (d % q == 0) {
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long long p = d / q;
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long long x = p + q - 2 * a,
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y = p - q;
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if (x % 4 || y % 4) continue;
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x /= 4, y /= 4;
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if (x >= 0 && y >= x) ans++;
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}
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}
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}
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cout << ans << endl;
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return 0;
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}
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