Compilare: user.cpp: In function ‘void read()’: user.cpp:11: warning: format ‘%s’ expects type ‘char*’, but argument 3 has type ‘char (*)[1000000]’ user.cpp:11: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int solve()’: user.cpp:17: warning: comparison between signed and unsigned integer expressions user.cpp:21: warning: comparison between signed and unsigned integer expressions