AtCoder Beginner Contest 113

A - Discount Fare z = x + y / 2 z = x + y / 2 z=x+y/2html include <bits/stdc++.h> using namespace std; #define rep(i,a,n) for (int i=a;i<n;i++) #define per(i,a,n) for (int i=n-1;i>=a;i--) #define pb p

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