Compilare: main.cpp:1:47: warning: bad option '-f Ofast' to pragma 'optimize' [-Wpragmas] 1 | #pragma GCC optimize("O4, Ofast, unroll-loops") | ^ main.cpp:1:47: warning: bad option '-f unroll-loops' to pragma 'optimize' [-Wpragmas] main.cpp:9:10: warning: bad option '-f Ofast' to attribute 'optimize' [-Wattributes] 9 | int main() | ^ main.cpp:9:10: warning: bad option '-f unroll-loops' to attribute 'optimize' [-Wattributes] main.cpp: In function 'int main()': main.cpp:16:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(int i=0; i<s.size(); i++) | ~^~~~~~~~~ main.cpp:25:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for(int j=0; j<s.size(); j++) | ~^~~~~~~~~ main.cpp:43:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for(int i=1; i<s.size(); i++) | ~^~~~~~~~~ main.cpp:56:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | if(x+1<s.size() && v[x+1]>v[x]+1) | ~~~^~~~~~~~~