0_0_30132973_17769.cpp: In function 'void dfs(int, int, ll)':
0_0_30132973_17769.cpp:68:8: error: 'd' was not declared in this scope
if(d==0){
^
0_0_30132973_17769.cpp:78:72: error: 'd' was not declared in this scope
if(ch[0][t1][0]&&ch[1][t2][0])dfs(ch[0][t1][0],ch[1][t2][0],sum<<1,d-1);
^
0_0_30132973_17769.cpp:79:72: error: 'd' was not declared in this scope
if(ch[0][t1][1]&&ch[1][t2][1])dfs(ch[0][t1][1],ch[1][t2][1],sum<<1,d-1);
^
0_0_30132973_17769.cpp:80:76: error: 'd' was not declared in this scope
if(ch[0][t1][0]&&ch[1][t2][1])dfs(ch[0][t1][0],ch[1][t2][1],(sum<<1)+1,d-1);
^
0_0_30132973_17769.cpp:81:76: error: 'd' was not declared in this scope
if(ch[0][t1][1]&&ch[1][t2][0])dfs(ch[0][t1][1],ch[1][t2][0],(sum<<1)+1,d-1);
^
0_0_30132973_17769.cpp: In function 'int main()':
0_0_30132973_17769.cpp:91:23: error: too many arguments to function 'void dfs(int, int, ll)'
dfs(0,0,0ll,31);
^
0_0_30132973_17769.cpp:65:6: note: declared here
void dfs(int t1,int t2,ll sum){
^
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