Compilare: user.cpp: In function 'int cuplaj(int)': user.cpp:53: warning: comparison between signed and unsigned integer expressions user.cpp:64: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void solve()': user.cpp:155: warning: too many arguments for format user.cpp: In function 'int main()': user.cpp:161: warning: 'sol' may be used uninitialized in this function