Submission #669490

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
669490	2022-12-06 14:43:46	GrandTiger1729	Collecting Stamps 3 (JOI20_ho_t3)	C++17	100 / 100	162 ms	126148 KiB

ho_t3

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#include <iostream>
using namespace std;
const long long INF = 1e18;
int main(){
    int n;
    long long L;
    cin >> n >> L;
    long long a[n], b[n];
    for (int i = 0; i < n; i++){
        cin >> a[i];
    }
    for (int i = 0; i < n; i++){
        cin >> b[i];
    }
    auto idx = [&](int i) -> int {
        return (i % n + n) % n;
    };
    auto dis = [&](long long x, long long y) -> long long {
        if (x > y) swap(x, y);
        return min(y - x, x + L - y);
    };
    long long dp[n][n][n + 1][2]{}; // [l, r], pickcnt, cur(l, r) => min time
    fill_n(&dp[0][0][0][0], sizeof(dp) / sizeof(long long), INF);
    for (int i = 0; i < n; i++){
        dp[i][i][min(a[i], L - a[i]) <= b[i]][0] = dp[i][i][min(a[i], L - a[i]) <= b[i]][1] = min(a[i], L - a[i]);
    }
    for (int t = 0; t < n - 1; t++){
        for (int l = n - 1; l >= 0; l--){
            int r = idx(l + t);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 75 / 75