Submission #41433

#	Time	Username	Problem	Language	Result	Execution time	Memory
41433		Nurlykhan	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	36 / 100	1075 ms	33772 KiB

skyscraper

#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 left not_right
#define y1 what

using namespace std;

const int N = (int) 3e4 + 10;
const int M = (int) 2e4 + 10;
const ll LINF = (ll) 1e18;
const int INF = (int) 1e9 + 7;
const double PI = 3.14159265359;
const double EPS = (double) 1e-9;

int nx[8] = {-1, -2, -2, -1, 1, 1, 2, 2};
int ny[8] = {-2, -1, 1, 2, -2, 2, -1, 1};

int n, m;
int b[N], p[N];
ll d[N];
vector<pii> v[N];

int main() {
  #define fn "teams"
  #ifdef witch
      freopen("input.txt", "r", stdin);
      freopen("output.txt", "w", stdout);
  #else
      //freopen(fn".in", "r", stdin);
      //freopen(fn".out", "w", stdout);
  #endif
  cin >> n >> m;
  for (int i = 0; i < m; i++) {
    cin >> b[i] >> p[i];
    d[i] = LINF;
  }
  for (int i = 0; i < m; i++) {
    for (int j = 0; j < m; j++) {
      if (i == j) 
        continue;
      int e = INF;
      if ((b[j] - b[i]) % p[i] == 0) {
        e = min(e, abs(b[j] - b[i]) / p[i]);
      }
      if (e < INF) {
      //  cout << i << ' ' << j << ' ' << e << endl;
        v[i].pb(mp(j, e));
      }
    }
  }
  set<pair<ll, int> > st;
  st.insert(mp(0, 0));
  d[0] = 0;
  while (!st.empty()) {
    int fr = st.begin() -> s;
    st.erase(st.begin());
    for (auto it : v[fr]) {
      if (d[fr] + it.s < d[it.f]) {
        st.erase(mp(d[it.f], it.f));
        d[it.f] = d[fr] + it.s;
        st.insert(mp(d[it.f], it.f));
      }
    }
  }
  if (d[1] == LINF)
    d[1] = -1;
  cout << d[1];
  return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 12 / 12
• Subtask 3: 14 / 14
• Subtask 4: 0 / 21
• Subtask 5: 0 / 43