Compilare: main.cpp:3: warning: ignoring '#pragma GCC ' [-Wunknown-pragmas] 3 | #pragma GCC ("Ofast") | main.cpp: In function 'int main()': main.cpp:31:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 31 | for (int i = 1; i <= n; ++i) | ^~~ main.cpp:36:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 36 | int nr = 0; | ^~~