Submission #436609

#	Time	Username	Problem	Language	Result	Execution time	Memory
436609		Stickfish	Distributing Candies (IOI21_candies)	C++17	3 / 100	702 ms	8856 KiB

candies

#include "candies.h"
#include <vector>
using namespace std;
using ll = long long;

const int MAXN = 2e5 + 123;
const ll INF = 1e18 + 177013;

vector<int> distribute_candies(vector<int> c, vector<int> l, vector<int> r, vector<int> v) {
    int n = c.size();
	int q = l.size();
    vector<int> s(n, 0);
	for(int i = 0; i < q; ++i)
		++r[i];

	if(n <= 2000){
		for(int qi = 0; qi < q; ++qi){
			for(int i = l[qi]; i < r[qi]; ++i){
				s[i] += v[qi];
				s[i] = max(s[i], 0);
				s[i] = min(s[i], c[i]);
			}
		}
		return s;
	}

	bool isv_positive = true;
	for(int i = 0; i < q; ++i)
		isv_positive &= v[i] > 0;
	if(isv_positive){
		vector<ll> pf(n + 1, 0);
		for(int qi = 0; qi < q; ++qi){
			pf[l[qi]] += v[qi];
			pf[r[qi]] -= v[qi];
		}
		ll sm = 0;
		for(int i = 0; i < n; ++i){
			sm += pf[i];
			sm = max(sm, 0ll);
			sm = min(sm, INF);
			s[i] = min(int(sm), c[i]);
		}
		return s;
	}
    return s;
}

• Subtask 1: 3 / 3
• Subtask 2: 0 / 8
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29
• Subtask 5: 0 / 33