0_0_21691456_16213.cpp: In function 'int main()':
0_0_21691456_16213.cpp:33:27: error: 'a' was not declared in this scope
b = b*10+s[9]-'0';a
^
0_0_21691456_16213.cpp:37:13: error: 'ans' was not declared in this scope
ans = fun_change(i,d,b);
^
0_0_21691456_16213.cpp:43:12: error: 'ans' was not declared in this scope
if(ans)
^
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