0_0_7868694_154.c:4:20: iostream: No such file or directory
0_0_7868694_154.c:5: error: syntax error before "namespace"
0_0_7868694_154.c: In function `dfs':
0_0_7868694_154.c:46: error: 'for' loop initial declaration used outside C99 mode
0_0_7868694_154.c: In function `main':
0_0_7868694_154.c:74: error: 'for' loop initial declaration used outside C99 mode
0_0_7868694_154.c:77: error: redefinition of 'i'
0_0_7868694_154.c:74: error: previous definition of 'i' was here
0_0_7868694_154.c:77: error: 'for' loop initial declaration used outside C99 mode
0_0_7868694_154.c:97: error: redefinition of 'i'
0_0_7868694_154.c:77: error: previous definition of 'i' was here
0_0_7868694_154.c:97: error: 'for' loop initial declaration used outside C99 mode
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