Compilare: user.cpp: In function ‘void solve()’: user.cpp:57: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:62: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:67: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:72: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:75: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘int main()’: user.cpp:98: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:100: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result