Compilare: user.cpp: In function ‘int ok(int, int)’: user.cpp:79:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘void solve()’: user.cpp:137:24: warning: ‘minx’ may be used uninitialized in this function [-Wmaybe-uninitialized] int h=djikstra(minx,i); ^