Compilare: main.cpp: In member function 'char InParser::read_ch()': main.cpp:19:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^ main.cpp: In function 'void solve()': main.cpp:132:51: warning: 'dist' may be used uninitialized in this function [-Wmaybe-uninitialized] if(d[i][x+vx[i]][y+vy[i]]>d[dir][x][y]+dist) ~~~~~~~~~~~~^~~~~