0_0_33229619_6190.cpp: In function 'int main()':
0_0_33229619_6190.cpp:7:16: error: 'a' was not declared in this scope
while(cin>>a>>b)
^
0_0_33229619_6190.cpp:7:19: error: 'b' was not declared in this scope
while(cin>>a>>b)
^
0_0_33229619_6190.cpp:18:26: error: 'sort' was not declared in this scope
sort(a+1,a+len1-1);
^
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