Submission #639289

#	Time	Username	Problem	Language	Result	Execution time	Memory
639289		tabr	Wiring (IOI17_wiring)	C++17	17 / 100	1084 ms	6596 KiB

wiring

#include <bits/stdc++.h>
using namespace std;
#ifdef tabr
#include "library/debug.cpp"
#else
#define debug(...)
#endif

long long min_total_length(vector<int> a, vector<int> b) {
    int n = (int) a.size();
    int m = (int) b.size();
    a.insert(a.end(), b.begin(), b.end());
    vector<int> order(n + m);
    iota(order.begin(), order.end(), 0);
    sort(order.begin(), order.end(), [&](int i, int j) {
        return a[i] < a[j];
    });
    const long long inf = (long long) 1e18;
    vector<long long> dp(n + m + 1, inf);
    dp[0] = 0;
    for (int i = 0; i < n + m; i++) {
        int flag = 0;
        long long cnt = 1;
        long long sum = min(dp[i], dp[i + 1]) - a[order[i]];
        long long left = a[order[i]];
        long long right = 0;
        for (int j = i + 1; j < n + m; j++) {
            if ((order[i] < n) == (order[j] < n)) {
                if (flag) {
                    break;
                }
                cnt++;
                sum -= a[order[j]];
                left = a[order[j]];
            } else {
                if (!flag) {
                    right = a[order[j]];
                }
                flag = 1;
                cnt--;
                sum += a[order[j]];
                dp[j + 1] = min(dp[j + 1], sum + max(0LL, cnt) * right + min(0LL, cnt) * left);
            }
        }
    }
    debug(dp);
    return dp[n + m];
}

#ifdef tabr
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    debug(min_total_length({1, 2, 3, 7}, {0, 4, 5, 9, 10}));
    return 0;
}
#endif

• Subtask 1: 7 / 7
• Subtask 2: 0 / 13
• Subtask 3: 10 / 10
• Subtask 4: 0 / 25
• Subtask 5: 0 / 45