Compilare: main.cpp: In function 'void read()': main.cpp:80:10: warning: unused variable 'c' [-Wunused-variable] char c; ^ main.cpp: In function 'void solve()': main.cpp:38:53: warning: 'soly' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << minn-1 << ' ' << solx << ' ' << soly << '\n'; ^~~~ main.cpp:38:38: warning: 'solx' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << minn-1 << ' ' << solx << ' ' << soly << '\n'; ^~~