Compilare: user.cpp: In function ‘void dijk()’: user.cpp:5:13: warning: overflow in implicit constant conversion [-Woverflow] #define INF 1e12 ^ user.cpp:31:14: note: in expansion of macro ‘INF’ dist[i]=INF; ^~~ user.cpp:30:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for ( int i = 1 ; i <= n ; i ++ ) ^~~ user.cpp:32:6: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ dist[s]=0; ^~~~ user.cpp:39:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int k = 0 ; k < ld[i].size(); k ++ ) ~~^~~~~~~~~~~~~~ user.cpp:37:15: warning: unused variable ‘c’ [-Wunused-variable] int c = dij.begin()->second; ^