func_code_string: #include <bits/stdc++.h>   using namespace std;   class data {    public:     long long k, b;     bool operator<(const data a) const {       if (k * a.k < 0)         return (b * a.k < a.b * k);       else         return (b * a.k > a.b * k);     }     bool operator==(const data a) const { return b * a.k == a.b * k; }   } d[100010];   long long n, tot = 0;   int main() {     long long x, y, cnt = 0;     scanf( %I64d , &n);     for (long long i = 1; i <= n; ++i) {       ++tot;       scanf( %I64d%I64d , &d[tot].k, &d[tot].b);       if (d[tot].k == 0) {         --tot;         continue;       }     }     n = tot;     sort(d + 1, d + tot + 1);     long long nowk = 0;     for (long long i = 1; i <= n; ++i)       if ((d[i - 1] == d[i]) && (i > 1)) {         nowk += abs(d[i].k);       } else {         if (nowk > 0) cnt++;         nowk = abs(d[i].k);       }     if (nowk) cnt++;     printf( %I64d n , cnt);     return 0;   }   