Compilare: user.cpp: In function ‘int main()’: user.cpp:27:23: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin >> a[now] + 1; ^ user.cpp:37:27: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin >> a[now] + 1; ^ user.cpp:50:20: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (a[now][j] == '1') ^