Compilare: main.cpp: In function 'long long int val(std::string)': main.cpp:24:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for (; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:67:41: warning: integer overflow in expression of type 'int' results in '2147483647' [-Woverflow] 67 | if (modf (x) <= (1<<31) - 1 && modf (y) <= (1<<31) - 1 && tigri + x >= 0 && cont - x * y >= 0) | ~~~~~~~~^~~ main.cpp:67:68: warning: integer overflow in expression of type 'int' results in '2147483647' [-Woverflow] 67 | if (modf (x) <= (1<<31) - 1 && modf (y) <= (1<<31) - 1 && tigri + x >= 0 && cont - x * y >= 0) | ~~~~~~~~^~~ main.cpp:82:41: warning: integer overflow in expression of type 'int' results in '2147483647' [-Woverflow] 82 | if (modf (x) <= (1<<31) - 1 && modf (y) <= (1<<31) - 1 && tigri - x >= 0 && cont + x * y >= 0) | ~~~~~~~~^~~ main.cpp:82:68: warning: integer overflow in expression of type 'int' results in '2147483647' [-Woverflow] 82 | if (modf (x) <= (1<<31) - 1 && modf (y) <= (1<<31) - 1 && tigri - x >= 0 && cont + x * y >= 0) | ~~~~~~~~^~~ main.cpp:40:15: warning: unused variable 'j' [-Wunused-variable] 40 | int n, i, j, cont, semn; | ^ main.cpp:40:24: warning: unused variable 'semn' [-Wunused-variable] 40 | int n, i, j, cont, semn; | ^~~~