Submission #1045650

#	Time	Username	Problem	Language	Result	Execution time	Memory
1045650		becaido	Wiring (IOI17_wiring)	C++17	10 / 100	472 ms	8208 KiB

wiring

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,popcnt,sse4,abm")
#include <bits/stdc++.h>
using namespace std;

#ifdef WAIMAI
#include "grader.cpp"
#else
#include "wiring.h"
#endif

#ifdef WAIMAI
#define debug(HEHE...) cout << "[" << #HEHE << "] : ", dout(HEHE)
void dout() {cout << '\n';}
template<typename T, typename...U>
void dout(T t, U...u) {cout << t << (sizeof...(u) ? ", " : ""), dout(u...);}
#else
#define debug(...) 7122
#endif

#define ll long long
#define Waimai ios::sync_with_stdio(false), cin.tie(0)
#define FOR(x,a,b) for (int x = a, I = b; x <= I; x++)
#define pb emplace_back
#define F first
#define S second

const ll INF = 1e18;
const int SIZE = 2e5 + 5;
const int K = 20;

int n, m, sz;
int a[SIZE], b[SIZE];
pair<int, int> p[SIZE];
ll dp[SIZE];

ll A[K + 1][K + 1];
ll cal(int l, int r) {
    n = m = 0;
    FOR (i, l, r) {
        auto [x, t] = p[i];
        if (t == 0) a[++n] = x;
        if (t == 1) b[++m] = x;
    }
    if (n == 0 || m == 0) return INF;
    FOR (i, 1, n) FOR (j, 1, m) {
        A[i][j] = INF;
        if (i > 1) A[i][j] = min(A[i][j], A[i - 1][j]);
        if (j > 1) A[i][j] = min(A[i][j], A[i][j - 1]);
        if (i > 1 && j > 1) A[i][j] = min(A[i][j], A[i - 1][j - 1]);
        if (i == 1 && j == 1) A[i][j] = 0;
        A[i][j] += abs(a[i] - b[j]);
    }
    return A[n][m];
}
ll min_total_length(vector<int> _r, vector<int> _b) {
    n = _r.size();
    m = _b.size();
    sz = 0;
    for (int x : _r) p[++sz] = {x, 0};
    for (int x : _b) p[++sz] = {x, 1};
    sort(p + 1, p + sz + 1);
    FOR (i, 1, sz) {
        dp[i] = INF;
        FOR (j, max(0, i - K), i - 1) {
            dp[i] = min(dp[i], dp[j] + cal(j + 1, i));
        }
        debug(i, dp[i]);
    }
    return dp[sz];
}

/*
in1
4 5
1 2 3 7
0 4 5 9 10
out1
10
*/

Compilation message (stderr)

wiring.cpp: In function 'long long int min_total_length(std::vector<int>, std::vector<int>)':
wiring.cpp:18:20: warning: statement has no effect [-Wunused-value]
   18 | #define debug(...) 7122
      |                    ^~~~
wiring.cpp:68:9: note: in expansion of macro 'debug'
   68 |         debug(i, dp[i]);
      |         ^~~~~

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