Compilare: main.cpp:9:22: warning: character constant too long for its type 9 | #pragma GCC optimize('Ofast','unroll-loops') | ^~~~~~~ main.cpp:9:30: warning: character constant too long for its type 9 | #pragma GCC optimize('Ofast','unroll-loops') | ^~~~~~~~~~~~~~ main.cpp:9:22: warning: '#pragma GCC optimize' is not a string or number [-Wpragmas] 9 | #pragma GCC optimize('Ofast','unroll-loops') | ^~~~~~~