Submission #699288

#	Time	Username	Problem	Language	Result	Execution time	Memory
699288		urosk	Packing Biscuits (IOI20_biscuits)	C++14	42 / 100	1090 ms	3532 KiB

biscuits

#include "biscuits.h"
#define here cerr<<"===========================================\n"
#define dbg(x) cerr<<#x<<": "<<x<<endl;
#include "bits/stdc++.h"
//#include <ext/pb_ds/tree_policy.hpp>
//#include <ext/pb_ds/assoc_container.hpp>
#define ld double
#define ll long long
#define llinf 100000000000000000LL // 10^17
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define sz(a) (ll)(a.size())
#define all(a) a.begin(),a.end()
#define ceri(a,l,r) {cerr<<#a<<": ";for(ll i_ = l;i_<=r;i_++) cerr<<a[i_]<< " ";cerr<<endl;}
#define cer(a) {cerr<<#a<<": ";for(ll x_ : a) cerr<<x_<< " ";cerr<<endl;}

#define daj_mi_malo_vremena ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);

using namespace std;
ll n = 60;
ll dp[61],b[61];
ll count_tastiness(ll x, vector<ll> a) {
    while(sz(a)<n) a.pb(0);
    for(ll i = 0;i<=n;i++) b[i] = a[i];
    for(ll i = 1;i<=n;i++) b[i]+=b[i-1]/2;
    dp[0] = 1;
    for(ll i = 0;i<n;i++){
        dp[i+1] = dp[i];
        if(b[i]<x) continue;
        ll k = (x-a[i])*2;
        for(ll j = i-1;j>=0;j--){
            k = max(k,0LL);
            dbg(k);
            if(b[j]>=k+x) dp[i+1]+=dp[j],k = (k+x-a[j])*2;
            else k = (k-a[j])*2;
        }
        k = max(k,0LL);
        if(k==0) dp[i+1]++;
    }
	return dp[n];
}
/*
2
3 2
2 1 2
3 3
5 2 1
*/

• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 21 / 21
• Subtask 4: 0 / 35
• Subtask 5: 0 / 23