Submission #437550

#TimeUsernameProblemLanguageResultExecution timeMemory
437550StickfishDistributing Candies (IOI21_candies)C++17
11 / 100
601 ms10776 KiB
#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];
			s[i] = int(min(sm, 1ll * c[i]));
		}
		return s;
	}
    return s;
}
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