Compilare: user.cpp: In function ‘int main()’: user.cpp:29:16: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] is >> A+1; ^ user.cpp:30:17: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] is >> st+1; ^ user.cpp:31:17: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] is >> dr+1; ^ user.cpp:37:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0; i < Sol.size(); ++i ) ^ user.cpp:25:13: warning: variable ‘f’ set but not used [-Wunused-but-set-variable] int f = 0; ^