Compilare: main.cpp: In function 'int main()': main.cpp:135:36: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(v[x][y-1] != -1 && (val[v[x][y-1]] != val[v[x][y+1]]) || (v[x][y-1] != v[x][y+1])) ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:140:36: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(v[x+1][y] != -1 && (val[v[x+1][y]] != val[v[x][y+1]] && val[v[x+1][y]] != val[v[x][y-1]]) || (v[x+1][y] != v[x][y+1] && v[x+1][y]!=v[x][y-1])) ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:145:36: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(v[x-1][y] != -1 && (val[v[x-1][y]] != val[v[x][y+1]] && val[v[x-1][y]] != val[v[x][y-1]] && val[v[x-1][y]] != val[v[x+1][y]]) || (v[x-1][y] != v[x][y+1] && v[x-1][y] != v[x][y-1] && v[x-1][y] != v[x+1][y])) ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:160:27: warning: 'ymax' may be used uninitialized in this function [-Wmaybe-uninitialized] out<<xmax<<" "<<ymax<<" "<<smax<<endl; ^~~ main.cpp:160:16: warning: 'xmax' may be used uninitialized in this function [-Wmaybe-uninitialized] out<<xmax<<" "<<ymax<<" "<<smax<<endl; ^~~