Submission #968492

#	Time	Username	Problem	Language	Result	Execution time	Memory
968492		nguyentunglam	Wiring (IOI17_wiring)	C++17	7 / 100	29 ms	19928 KiB

wiring

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

const int N = 1010;

long long dp[N][N];

int a[N], b[N];

int c[N], d[N];

int g[2][N];

long long min_total_length(std::vector<int> R, std::vector<int> B) {
  int n = R.size(), m = B.size();
  for(int i = 1; i <= n; i++) a[i] = R[i - 1];
  for(int i = 1; i <= m; i++) b[i] = B[i - 1];

  a[n + 1] = b[m + 1] = 1e9;

  for(int i = 1, j = 1, k = 0, sum = 0; i <= n || j <= m;) {
//    cout << sum << endl;
    if (a[i] < b[j]) {
      sum += d[k] == 1;
//      cout << i << " " << sum << endl;
      g[0][i] = sum;
      c[++k] = a[i++];
      d[k] = 0;
    }
    else {
      sum += d[k] == 0;
      g[1][j] = sum;
      c[++k] = b[j++];
      d[k] = 1;
    }
  }

//  for(int i = 1; i <= n; i++) cout << g[0][i] << " "; cout << endl;
//  for(int i = 1; i <= m; i++) cout << g[1][i] << " "; cout << endl;


  memset(dp, 61, sizeof(dp));
  dp[0][0] = 0;
  for(int i = 1; i <= n; i++) for(int j = 1; j <= m; j++) if (abs(g[0][i] - g[1][j]) == 1) {
    dp[i][j] = min({dp[i - 1][j - 1], dp[i][j - 1], dp[i - 1][j]}) + abs(a[i] - b[j]);
  }

  return dp[n][m];
}

#ifdef ngu
int main() {
  freopen ("task.inp", "r", stdin);
  freopen ("task.out", "w", stdout);
	int n, m;
	assert(2 == scanf("%d %d", &n, &m));

	vector<int> r(n), b(m);
	for(int i = 0; i < n; i++)
		assert(1 == scanf("%d", &r[i]));
	for(int i = 0; i < m; i++)
		assert(1 == scanf("%d", &b[i]));

	long long res = min_total_length(r, b);
	printf("%lld\n", res);

	return 0;
}
#endif // ngu

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