Compilare: user.cpp: In function ‘void read()’: user.cpp:11: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int solve()’: user.cpp:52: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:65: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:49: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:80: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:93: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:77: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:108: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:121: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:105: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:136: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:149: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:133: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘int main()’: user.cpp:183: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:184: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result