Submission #1123668

#	Time	Username	Problem	Language	Result	Execution time	Memory
1123668		math_rabbit_1028	Nile (IOI24_nile)	C++20	67 / 100	2094 ms	6332 KiB

nile

#include "nile.h"
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;

vector<pll> C;
ll block(int st, int ed, int D) { //[st, ed)
    ll ret = 1e18;
    if ((ed-st)%2 == 0) return 0;
    for (int i = st; i < ed; i++) {
        // [st, i) + [i+1, ed)
        if ((i-st)%2 == 0) ret = min(ret, C[i].second);
        else if (C[i+1].first - C[i-1].first <= D) ret = min(ret, C[i].second);
    }
    return ret;
}

vector<ll> calculate_costs(vector<int> W, vector<int> A, vector<int> B, vector<int> E) {
    int Q = (int)E.size();
    int N = (int)W.size();

    ll sum = 0;
    for (int i = 0; i < N; i++) sum += B[i];
    vector<ll> R(Q, sum);
    for (int i = 0; i < N; i++) C.push_back({W[i], A[i]-B[i]});
    sort(C.begin(), C.end());

    for (int t = 0; t < Q; t++) {
        ll D = E[t];
        int st = 0;
        while (st < N) {
            for (int i = st+1; i <= N; i++) {
                if (i == N || C[i].first - C[i-1].first > D) {
                    R[t] += block(st, i, D);
                    st = i;
                    break;
                }
            }
        }
    }

    return R;
}

• Subtask 0: 0 / 0
• Subtask 1: 6 / 6
• Subtask 2: 13 / 13
• Subtask 3: 17 / 17
• Subtask 4: 11 / 11
• Subtask 5: 20 / 20
• Subtask 6: 0 / 15
• Subtask 7: 0 / 18