Compilare: main.cpp:1:40: warning: bad option '-f unroll-loops' to pragma 'optimize' [-Wpragmas] 1 | #pragma GCC optimize("O2, unroll-loops") | ^ main.cpp:26:44: warning: bad option '-f unroll-loops' to attribute 'optimize' [-Wattributes] 26 | void fastIO(char input[50], char output[50]) | ^ main.cpp: In function 'void fastIO(char*, char*)': main.cpp:31:14: warning: comparison with string literal results in unspecified behavior [-Waddress] 31 | if(input != "std") { | ~~~~~~^~~~~~~~ main.cpp:34:15: warning: comparison with string literal results in unspecified behavior [-Waddress] 34 | if(output != "std") { | ~~~~~~~^~~~~~~~ main.cpp: At global scope: main.cpp:39:10: warning: bad option '-f unroll-loops' to attribute 'optimize' [-Wattributes] 39 | int main() | ^ main.cpp: In function 'int main()': main.cpp:41:12: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] 41 | fastIO("std", "std"); | ^~~~~ main.cpp:41:19: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] 41 | fastIO("std", "std"); | ^~~~~