Snackdown 2019 Qualification round solutions:

1.QUALPREL code: #include<bits/stdc++.h> #define fastio() ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0) #define pb push_back #define MOD 1000000007 #define min3(a,b,c) min(a,min(b,c)) #define max3(a,b,c) max(a,max(b,c)) #define FOR(a,n) for(int i=a;i<n;++i) #define arrin(n) for(int i=0; i < n; ++i) cin>>arr[i]; #define arrout(n) for(int i=0; i < n; ++i) cout<<arr[i]<<” “;cout<<nl; #define nl “\n” #define mp make_pair typedef unsigned long long ull; typedef long long…