Submission #378229

#	Time	Username	Problem	Language	Result	Execution time	Memory
378229		Thistle	Packing Biscuits (IOI20_biscuits)	C++14	0 / 100	17 ms	364 KiB

biscuits

#include "biscuits.h"
#include <vector>
#include<iostream>
#include<algorithm>
#include<unordered_map>
#include<map>
using namespace std;
using ll=long long;
using H=pair<ll, ll>;
using vi=vector<ll>;
#define rng(i,a,b) for(int (i)=(a);(i)<(b);(i)++)
#define rep(i,n) rng((i),(0),(n))
#define pb push_back
#define vec vector
#define all(a) (a).begin(),(a).end()
#define fs first
#define sc second
#define siz(a) ll((a).size())


long long count_tastiness(long long x, std::vector<long long> a) {

	ll k=siz(a);
	a.resize(60);
	rng(i,k,60) a[i]=0;
	unordered_map<ll, ll>mp[61];
	//remain cookie -> able number

	//i no jiten de no atai ga t ika dattara j made tobashimasu
	//i+1 ha t ijou no atai nara soko ni iku keishiki ni narimasu
	vec<vi> num(60),val(60);
	rep(i,60){
		ll sum=0,mn=1e18;
		rng(j,i+1,60){
			sum>>=1;
			sum+=a[j];
			if(sum>=x){
				num[i].pb(mn);
				val[i].pb(j);
				mn=-1;
				break;
			}
			else{
				//(x-sum)<(j-i) ga over flow shitara dame
				if(((mn+(1<<(j-i))+1)>>(j-i))>=(x-sum)) continue;

				ll t=(x-sum)<<(j-i);
				if(mn>t){
					num[i].pb(mn);
					val[i].pb(j);
					mn=t-1;
				}
			}
		}
		if(mn>=0){
			num[i].pb(mn);
			val[i].pb(60);
		}
	}
	rep(i,60) {
		reverse(all(num[i]));
		reverse(all(val[i]));
	}

	mp[0][0]=1;
	rep(i,60){
		auto& now=mp[i];
		auto& nxt=mp[(i+1)];
		for(auto g:now){
			ll t=g.fs;
			t+=a[i];
			int r=val[i][lower_bound(all(num[i]),t)-num[i].begin()];
			mp[r][t>>(r-i)]+=g.sc;
			t-=x;
			if(t>=0){
				r=val[i][lower_bound(all(num[i]),t)-num[i].begin()];
				mp[r][t>>(r-i)]+=g.sc;
			}
		}
	}

	ll ans=0;
	for(auto g:mp[60]){
		ans+=g.sc;
	}
	return ans;
}

Compilation message (stderr)

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:11:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   11 | #define rng(i,a,b) for(int (i)=(a);(i)<(b);(i)++)
      |                            ^
biscuits.cpp:25:2: note: in expansion of macro 'rng'
   25 |  rng(i,k,60) a[i]=0;
      |  ^~~
biscuits.cpp:11:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   11 | #define rng(i,a,b) for(int (i)=(a);(i)<(b);(i)++)
      |                            ^
biscuits.cpp:12:18: note: in expansion of macro 'rng'
   12 | #define rep(i,n) rng((i),(0),(n))
      |                  ^~~
biscuits.cpp:32:2: note: in expansion of macro 'rep'
   32 |  rep(i,60){
      |  ^~~
biscuits.cpp:11:28: warning: unnecessary parentheses in declaration of 'j' [-Wparentheses]
   11 | #define rng(i,a,b) for(int (i)=(a);(i)<(b);(i)++)
      |                            ^
biscuits.cpp:34:3: note: in expansion of macro 'rng'
   34 |   rng(j,i+1,60){
      |   ^~~
biscuits.cpp:11:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   11 | #define rng(i,a,b) for(int (i)=(a);(i)<(b);(i)++)
      |                            ^
biscuits.cpp:12:18: note: in expansion of macro 'rng'
   12 | #define rep(i,n) rng((i),(0),(n))
      |                  ^~~
biscuits.cpp:60:2: note: in expansion of macro 'rep'
   60 |  rep(i,60) {
      |  ^~~
biscuits.cpp:11:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   11 | #define rng(i,a,b) for(int (i)=(a);(i)<(b);(i)++)
      |                            ^
biscuits.cpp:12:18: note: in expansion of macro 'rng'
   12 | #define rep(i,n) rng((i),(0),(n))
      |                  ^~~
biscuits.cpp:66:2: note: in expansion of macro 'rep'
   66 |  rep(i,60){
      |  ^~~
biscuits.cpp:68:9: warning: unused variable 'nxt' [-Wunused-variable]
   68 |   auto& nxt=mp[(i+1)];
      |         ^~~

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