Submission #30989

#	Time	Username	Problem	Language	Result	Execution time	Memory
30989		kajebiii	Boxes with souvenirs (IOI15_boxes)	C++14	20 / 100	3 ms	420 KiB

boxes

#include "boxes.h"
#include <bits/stdc++.h>

using namespace std;

#define SZ(v) ((int)(v).size())
#define ALL(v) (v).begin(),(v).end()
#define one first
#define two second
typedef long long ll;
typedef pair<double, double> pd;
typedef pair<int, int> pi;
typedef pair<ll, int> pli;
typedef pair<ll, ll> pll; typedef pair<ll, pi> plp;
typedef tuple<int, int, int> ti; typedef tuple<ll, int, int> tli;
const int INF = 0x3f2f1f0f;
const ll LINF = 1ll * INF * INF * 2;

const int MAX_N = 1e7 + 100;

int N, K, L, P[MAX_N];
ll Ls[MAX_N], Rs[MAX_N];
deque<int> Ps;
ll delivery(int n, int k, int l, int p[]) {
    N = n; K = k; L = l;
    for(int i=0; i<N; i++) Ps.push_back(p[i]);
    while(SZ(Ps) > 0 && Ps.front() == 0) Ps.pop_front();
    for(int i=0; i<SZ(Ps); i++) P[i+1] = Ps[i];
    N = SZ(Ps);
    
    P[0] = 0; P[N+1] = L;
    for(int i=1; i<=N; i++) {
        int cnt = i-1;
        if(cnt % K == 0) Ls[i] = Ls[i-1] + P[i] * 2;
        else Ls[i] = Ls[i-1] + (P[i] - P[i-1]) * 2;
    }
    for(int i=N; i>=1; i--) {
        int cnt = N - i;
        if(cnt % K == 0) Rs[i] = Rs[i+1] + (L-P[i]) * 2;
        else Rs[i] = Rs[i+1] + (P[i+1] - P[i]) * 2;
    }
    for(int i=N; i>=1; i--) {
        int rix = min(N+1, i+K);
        Rs[i] = min(Rs[i], Rs[rix] + L);
    }

    ll ans = LINF;
    for(int i=0; i<=N; i++) {
        ans = min(ans, Ls[i] + Rs[i+1]);
//        printf("%d : %lld %lld\n", i, Ls[i], Rs[i+1]);
    }

    return ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30