0_0_11645158_28861.c:1:20: iostream: No such file or directory
0_0_11645158_28861.c:2:21: algorithm: No such file or directory
0_0_11645158_28861.c:3:19: cstring: No such file or directory
0_0_11645158_28861.c:4: error: syntax error before "namespace"
0_0_11645158_28861.c:14: error: syntax error before "tree"
0_0_11645158_28861.c: In function `dfs':
0_0_11645158_28861.c:21: error: request for member `r' in something not a structure or union
0_0_11645158_28861.c:22: error: 'for' loop initial declaration used outside C99 mode
0_0_11645158_28861.c:23: error: request for member `l' in something not a structure or union
0_0_11645158_28861.c:23: error: request for member `r' in something not a structure or union
0_0_11645158_28861.c:23: error: request for member `s' in something not a structure or union
0_0_11645158_28861.c: In function `main':
0_0_11645158_28861.c:30: error: `cin' undeclared (first use in this function)
0_0_11645158_28861.c:30: error: (Each undeclared identifier is reported only once
0_0_11645158_28861.c:30: error: for each function it appears in.)
0_0_11645158_28861.c:32: error: 'for' loop initial declaration used outside C99 mode
0_0_11645158_28861.c:33: error: request for member `l' in something not a structure or union
0_0_11645158_28861.c:34: error: request for member `r' in something not a structure or union
0_0_11645158_28861.c:36: error: redefinition of 'i'
0_0_11645158_28861.c:32: error: previous definition of 'i' was here
0_0_11645158_28861.c:36: error: 'for' loop initial declaration used outside C99 mode
0_0_11645158_28861.c:38: error: request for member `r' in something not a structure or union
0_0_11645158_28861.c:38: error: request for member `l' in something not a structure or union
0_0_11645158_28861.c:39: error: request for member `l' in something not a structure or union
0_0_11645158_28861.c:40: error: request for member `s' in something not a structure or union
0_0_11645158_28861.c:43: error: `cout' undeclared (first use in this function)
0_0_11645158_28861.c:43: error: `endl' undeclared (first use in this function)
0_0_11645158_28861.c:45: error: syntax error before '/' token
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