Submission #50230

#	Time	Username	Problem	Language	Result	Execution time	Memory
50230		Just_Solve_The_Problem	Rail (IOI14_rail)	C++11	30 / 100	110 ms	34556 KiB

rail

#include <bits/stdc++.h>
#include "rail.h"

using namespace std;

#define pb push_back
#define eb emplace_back
#define ll long long
#define pii pair < int, int >
#define fr first
#define sc second
#define mk make_pair
#define sz(s) (int)s.size()
#define all(s) s.begin(), s.end()
#define Ok puts("ok");
#define whatis(x) cerr << #x << " = " << x << endl;
#define pause system("pause");
#define random (rand() ^ (rand() << 15))

const int N = (int)5e3 + 7;
const int inf = (int)1e9 + 7;

int n;
int dis[N][N];
pii mn;

int getdis(int i, int j) {
  if (i == j) return 0;
  if (dis[i][j] != 0) return dis[i][j];
  dis[i][j] = dis[j][i] = getDistance(i, j);
  return dis[i][j];
}

void findLocation(int nn, int first, int location[], int stype[]) {
  n = nn;
  mn.fr = inf;
  stype[0] = 0;
  location[0] = first;
  for (int i = 1; i < n; i++) {
    mn = min(mn, mk(getdis(0, i), i));
  }
  stype[mn.sc] = 1;
  location[mn.sc] = mn.fr + first;
  for (int i = 1; i < n; i++) {
    if (i == mn.sc) continue;
    if (getdis(0, i) + mn.fr == getdis(mn.sc, i)) {
      stype[i] = 1;
      location[i] = first + dis[0][i];
    } else {
      stype[i] = 0;
      location[i] = location[mn.sc] - getdis(mn.sc, i);
    }
  }
  for (int i = 0; i < n; i++) stype[i]++;
}
/*
4
4
1 3
2 5
1 2
1 1
*/

• Subtask 1: 8 / 8
• Subtask 2: 22 / 22
• Subtask 3: 0 / 26
• Subtask 4: 0 / 44