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41 lines
1.0 KiB
C++
41 lines
1.0 KiB
C++
#define _CRT_SECURE_NO_WARNINGS
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#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
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#include <bits/stdc++.h>
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using namespace std;
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typedef long long ll;
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const int N = 105;
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const double eps = 1e-6;
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double x1[N], x2[N];
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int y[N];
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int sign(double x)
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{
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if (x < -eps) return -1;
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if (x > eps) return 1;
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return 0;
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}
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int main()
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{
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uniform_real_distribution<double> unif(-1e5, 1e5);
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default_random_engine re(time(0));
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int T, n;
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scanf("%d", &T);
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while (T--)
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{
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scanf("%d", &n);
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for (int i = 0; i < n; i++)
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scanf("%lf%lf%d", x1 + i, x2 + i, y + i);
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bool flag = false;
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for (int t = 0; t < 1000 && !flag; t++)
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{
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flag = true;
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double p1 = unif(re), p2 = unif(re);
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for (int i = 0; i < n; i++)
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if (sign(x1[i] * p1 + x2[i] * p2) != y[i])
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flag = false;
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if (flag)
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break;
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}
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puts(flag ? "Successful!" : "Infinite loop!");
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}
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return 0;
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} |