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Submission #899864

# Submission time Handle Problem Language Result Execution time Memory
899864 2024-01-07T07:47:22 Z rxlfd314 Sky Walking (IOI19_walk) C++17
10 / 100
 4000 ms 1048576 KB 
#include "walk.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ari2 = array<int, 2>;
using ari3 = array<int, 3>;
using arl2 = array<ll, 2>;
using arl3 = array<ll, 3>;

#define vt vector
#define size(x) (int((x).size()))
#define all(x) begin(x), end(x)

#define REP(a, b, c, d) for (int a = (b); (d) > 0 ? a <= (c) : a >= (c); a += (d))
#define FOR(a, b, c) REP(a, b, c, 1)
#define ROF(a, b, c) REP(a, b, c, -1)

ll ST12(vt<int> X, vt<int> H, vt<int> L, vt<int> R, vt<int> Y, int S, int G, int LEN) {
  const int N = size(X), M = size(L);
  vt<ari3> points;
  FOR(i, 0, M-1)
    FOR(j, L[i], R[i])
      points.push_back({j, Y[i], i});
  FOR(i, 0, N-1)
    points.push_back({i, 0, -1});
  
  sort(all(points));
  points.erase(unique(all(points)), end(points));
  
  vt<int> prv(M, -1);
  
  vt<vt<ari2>> adj(size(points));
  priority_queue<arl2, vt<arl2>, greater<arl2>> pq;
  vt<ll> dst(size(points), LLONG_MAX);
  FOR(i, 0, size(points)-1) {
    if (i && points[i][0] == points[i-1][0] && points[i][1] <= H[points[i][0]]) {
      adj[i-1].push_back({i, points[i][1] - points[i-1][1]});
      adj[i].push_back({i-1, points[i][1] - points[i-1][1]});
    }
    if (~points[i][2] && ~prv[points[i][2]]) {
      adj[i].push_back({prv[points[i][2]], X[points[i][0]] - X[points[prv[points[i][2]]][0]]});
      adj[prv[points[i][2]]].push_back({i, X[points[i][0]] - X[points[prv[points[i][2]]][0]]});
    }
    if (~points[i][2])
      prv[points[i][2]] = i;
    if (points[i][0] == S && !points[i][1])
      pq.push({dst[i] = 0, i});
  }
  
  while (size(pq)) {
    auto [d, i] = pq.top();
    pq.pop();
    if (points[i][0] == G && !points[i][1])
      return d;
    if (d > dst[i])
      continue;
    #ifdef DEBUG
    cout << "at " << X[points[i][0]] << ' ' << points[i][1] << " with dist of " << d << '\n';
    #endif
    for (auto &[j, v] : adj[i])
      if (d + v < dst[j])
        pq.push({dst[j] = d + v, j});
  }
  
  return -1;
}

ll ST34(vt<int> X, vt<int> H, vt<int> L, vt<int> R, vt<int> Y, int S, int G) {
  
}

ll min_distance(vt<int> X, vt<int> H, vt<int> L, vt<int> R, vt<int> Y, int S, int G) {
	const int N = size(X), M = size(L);
  bool sub2 = true;
  int LEN = N;
  FOR(i, 0, M-1) {
    sub2 &= R[i] - L[i] < 15;
    LEN += R[i] - L[i] + 1;
  }
  if (sub2 || N < 51 && M < 51)
    return ST12(X, H, L, R, Y, S, G, LEN);
}

Compilation message

walk.cpp: In function 'll ST34(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, int, int)':
walk.cpp:70:1: warning: no return statement in function returning non-void [-Wreturn-type]
   70 | }
      | ^
walk.cpp: In function 'll min_distance(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, int, int)':
walk.cpp:80:22: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   80 |   if (sub2 || N < 51 && M < 51)
      |               ~~~~~~~^~~~~~~~~
walk.cpp:82:1: warning: control reaches end of non-void function [-Wreturn-type]
   82 | }
      | ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 440 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 436 KB Output is correct
17 Correct 1 ms 524 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 243 ms 78312 KB Output is correct
4 Correct 368 ms 87732 KB Output is correct
5 Runtime error 3169 ms 1048576 KB Execution killed with signal 9
6 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 12748 KB Output is correct
2 Correct 1758 ms 466988 KB Output is correct
3 Execution timed out 4049 ms 793212 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 12748 KB Output is correct
2 Correct 1758 ms 466988 KB Output is correct
3 Execution timed out 4049 ms 793212 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 440 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 436 KB Output is correct
17 Correct 1 ms 524 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 243 ms 78312 KB Output is correct
21 Correct 368 ms 87732 KB Output is correct
22 Runtime error 3169 ms 1048576 KB Execution killed with signal 9
23 Halted 0 ms 0 KB -