View Compilation Error

In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cassert:43:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:33,
                 from 0_0_18261008_11975.cpp:3:
0_0_18261008_11975.cpp: In function 'int main()':
0_0_18261008_11975.cpp:105:42: error: 'INF' was not declared in this scope
     for (i=1;i<=n;i++) assert (dis[i] != INF);
                                          ^