Codeforces Educational Round 170 (Div. 2) || Editorial for Problem A,B,C

[@nicspyy]

Did D also, but not confident on explanation so I am skipping IT
B
int mod = (1e9+7);
vi po;

void f(){
int cnt = 1;
for(int i=0; i>n;

vi an(n, 0), kn(n, 0);
for(auto &i: an) cin>>i;
for(auto &i: kn) cin>>i;

for(int i=0; i

[@manishkumar-uw5mw]

What's your rating now ??

[@nicspyy]

@@manishkumar-uw5mw after crossing expert I start giving contest from temporary account,