75

#include <bits/stdc++.h>
using namespace std;


const short LOVE = 1411;
const int INF = 1 << 30;
typedef long double db;


void query() {
    db a, b, c; cin >> a >> b >> c;


    int ans;
    if (a == 0 && b == 0)
        if (c == 0)
            ans = INF;
        else
            ans = 0;
    else {
        vector<db> p;
        set<db> s;
        db delta;
        if (a == 0)
            p = {-c / b};
        else if (delta = b * b - 4 * a * c, delta >= 0)
            p = {(-b - sqrt(delta)) / (2*a), (-b + sqrt(delta)) / (2*a)};
        for (db no : p)
            if (no >= 0)
                s.insert(sqrt(no)),
                s.insert(-sqrt(no));
        ans = s.size();
    }
    if (ans == 0)
        cout << "phuong trinh vo nghiem";
    else if (ans == INF)
        cout << "phuong trinh vo so nghiem";
    else
        cout << "phuong trinh co " << ans << " nghiem";
}


int main() {
    //freopen("Test.INP", "r", stdin);
    //freopen("Test.OUT", "w", stdout);
    cin.tie(NULL)->sync_with_stdio(false);


    int t; for (t = 1; t--;) query();


    return 0;
}