Submission #41393

#	Time	Username	Problem	Language	Result	Execution time	Memory
41393		Nurlykhan	Palembang Bridges (APIO15_bridge)	C++14	0 / 100	2 ms	792 KiB

bridge

#include <bits/stdc++.h>

#define pii pair<int, int>
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define ll long long
#define ld long double
#define sz(v) int(v.size())
#define all(v) v.begin(), v.end()
#define vec vector<int>
#define dead not_bad
#define bad gooood

#define left not_right
#define y1 what

using namespace std;

const int N = (int) 2e5 + 10;
const int M = (int) 2e6;
const ll LINF = (ll) 2e18;
const int INF = (int) 1e9 + 7;
const int ALPHA = 26;
const int mod = INF;
const double PI = 3.14159265359;
const ld EPS = (ld) 1e-12;

const int nx[4] = {0, 0, -1, 1};
const int ny[4] = {1, -1, 0, 0};


ll solve(vec a, vec b) {
  int n = sz(a);
  vec x_arr;
  for (auto it : a) {
    x_arr.pb(it);
  }
  for (auto it : b) {
    x_arr.pb(it);
  }
  ll ans = LINF;
  for (auto x : x_arr) {
    ll cur = 0;
    for (int i = 0; i < n; i++) {
      if (a[i] <= x && x <= b[i]) {
        cur += b[i] - a[i];
      } else if (a[i] > x) {
        cur += a[i] + b[i] - 2 * x;
      } else if (b[i] < x) {
        cur += 2 * x - (a[i] + b[i]);
      } else {
        assert(0);
      }
    }
    ans = min(ans, cur);
  }
  return ans + n;
}


int k, n;

int main() {
  int nn;
  ll ans = 0;
  cin >> k >> nn;
  assert(k == 1);
  vec A, B;
  for (int i = 1; i <= nn; i++) {
    char ta, tb;
    int x1, x2;
    cin >> ta >> x1 >> tb >> x2;
    //cout << ta << ' ' << x1 << ' ' << tb << ' ' << x2 << endl;
    if (x1 > x2) 
    	swap(x1, x2);
    if (ta == tb) {
      ans += (x2 - x1);
    } else {
      A.pb(x1);
      B.pb(x2);
    }
  }
  cout << ans + solve(A, B);
  return 0;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 14
• Subtask 3: 0 / 9
• Subtask 4: 0 / 32
• Subtask 5: 0 / 37