0_0_30686501_15905.c: In function 'dfs':
0_0_30686501_15905.c:13:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int j=fir[i];j;j=nxt[j])
^
0_0_30686501_15905.c:13:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_30686501_15905.c: In function 'main':
0_0_30686501_15905.c:22:2: error: expected expression before '/' token
//freopen("test.in","r",stdin);
^
0_0_30686501_15905.c:29:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=1;i<n;i++)
^
0_0_30686501_15905.c:36:11: error: redefinition of 'i'
for(int i=1;i<=n;i++)
^
0_0_30686501_15905.c:29:11: note: previous definition of 'i' was here
for(int i=1;i<n;i++)
^
0_0_30686501_15905.c:36:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=1;i<=n;i++)
^
0_0_30686501_15905.c:39:11: error: redefinition of 'i'
for(int i=1;i<=n;i++)
^
0_0_30686501_15905.c:36:11: note: previous definition of 'i' was here
for(int i=1;i<=n;i++)
^
0_0_30686501_15905.c:39:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=1;i<=n;i++)
^
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