func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long n, x, y, c = 0, d = 0;     cin >> n;     long long m = n;     while (n--) {       scanf( %lld %lld , &x, &y);       if (x > 0) c++;       if (x < 0) d++;     }     if (c == m - 1 || d == m - 1 || c == m || d == m)       cout <<  YES  << endl;     else       cout <<  NO  << endl;     return 0;   }   