Compilare: user.cpp: In function ‘int main()’: user.cpp:16:9: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] f>>s+1; ^ user.cpp:50:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=h[k+1][0];j++) ^ user.cpp:51:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(h[k+1][j]==nr&&h1[k+1][j]==nr1) ^ user.cpp:51:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(h[k+1][j]==nr&&h1[k+1][j]==nr1) ^ user.cpp:49:20: warning: unused variable ‘ok’ [-Wunused-variable] int ok=0; ^