Compilare: main.cpp: In function 'int main()': main.cpp:16:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 16 | for ( int i = 1; i <= n ; i ++ ) | ^~~ main.cpp:20:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 20 | for ( int i = n ; i >= 1; i -- ) | ^~~ main.cpp:15:15: warning: unused variable 'last' [-Wunused-variable] 15 | long long last = -1e18; | ^~~~