Compilare: user.cpp: In function ‘void solve()’: user.cpp:57: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:63: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:68: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:73: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:76: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘int main()’: user.cpp:99: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:101: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result