View Compilation Error

0_0_33813793_19856.cpp: In function 'void dfs(int)':
0_0_33813793_19856.cpp:7:2: error: 'cnt' was not declared in this scope
  cnt[n1]=1;
  ^
0_0_33813793_19856.cpp: In function 'void dfs1(int, int)':
0_0_33813793_19856.cpp:17:21: error: 'cnt' was not declared in this scope
   dfs1(v[n1][i],s+n-cnt[v[n1][i]]);
                     ^