Compilare: user.cpp: In function ‘void Dijkstra(int, int)’: user.cpp:27:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[now].size();i++){ ^ user.cpp: In function ‘int BTK(int, int)’: user.cpp:47:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:66:29: warning: iteration 17u invokes undefined behavior [-Waggressive-loop-optimizations] dp[i][j]=INT_MAX; ^ user.cpp:64:5: note: containing loop for(int i=0;i<=19;i++) ^ user.cpp:66:29: warning: iteration 2005u invokes undefined behavior [-Waggressive-loop-optimizations] dp[i][j]=INT_MAX; ^ user.cpp:65:9: note: containing loop for(int j=0;j<lim;j++) ^