0_0_16699806_10641.cpp:14:1: error: '_int64' does not name a type
_int64 ans ;
^
0_0_16699806_10641.cpp: In function 'void dfs(int, int)':
0_0_16699806_10641.cpp:46:3: error: 'ans' was not declared in this scope
ans = (ans + sum[x]) % Z;
^
0_0_16699806_10641.cpp: In function 'int main()':
0_0_16699806_10641.cpp:63:5: error: 'ans' was not declared in this scope
ans = 0 ;
^
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