Submission #746449

#	Time	Username	Problem	Language	Result	Execution time	Memory
746449		danikoynov	Wiring (IOI17_wiring)	C++14	20 / 100	22 ms	5312 KiB

wiring

#include "wiring.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const int maxn = 1e5 + 10;

const ll inf = 1e18;
int n, m;
ll r[maxn], b[maxn], dp[210][210];
ll min_total_length(vector<int> R, vector<int> B)
{
    n = R.size();
    m = B.size();
    for (int i = 1; i <= n; i ++)
        r[i] = R[i - 1];
    for (int i = 1; i <= m; i ++)
        b[i] = B[i - 1];

    r[0] = - inf;
    b[0] = - inf;
    if (n <= 200 && m <= 200)
    {

    for (int i = 0; i <= n; i ++)
        for (int j = 0; j <= m; j ++)
            dp[i][j] = inf;
    dp[0][0] = 0;
    for (int i = 1; i <= n; i ++)
    {
        for (int j = 1; j <= m; j ++)
        {
            dp[i][j] = min(dp[i - 1][j], min(dp[i - 1][j - 1], dp[i][j - 1]));
            dp[i][j] = dp[i][j] + abs(r[i] - b[j]);
        }
    }

    return dp[n][m];
    }
    else
    {
        ll ans = 0;
        int mx = min(n, m);
        for (int i = 1; i <= mx; i ++)
        {
            int id1 = n - i + 1;
            int id2 = i;
            ans = ans + abs(r[id1] - b[id2]);
        }

        if (n > m)
        {
            for (int i = 1; i <= n - mx; i ++)
                ans = ans + abs(r[i] - b[1]);
        }
        else
        {
            for (int i = m; i > mx; i --)
                ans = ans + abs(b[i] - r[n]);
        }
        return ans;
    }
}

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