src.cpp: In function 'int main()':
src.cpp:10:3: error: 'll' was not declared in this scope
ll a[N], b[N];
^
src.cpp:13:12: error: 'a' was not declared in this scope
cin >> a[i] >> b[i];
^
src.cpp:13:20: error: 'b' was not declared in this scope
cin >> a[i] >> b[i];
^
src.cpp:19:17: error: 'a' was not declared in this scope
if (a[i] >= b[i])
^
src.cpp:19:25: error: 'b' was not declared in this scope
if (a[i] >= b[i])
^