func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     int counts = 0, counts2 = 0;     for (int i = 0; i < n; ++i) {       int a, b;       cin >> a >> b;       if (a < 0)         counts++;       else         counts2++;     }     if (counts <= 1 || counts2 <= 1)       cout <<  Yes ;     else       cout <<  No ;   }   