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답안 #998757

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
998757 2024-06-14T16:13:21 Z iah Toll (BOI17_toll) C++14
100 / 100
 126 ms 72160 KB 
#include<bits/stdc++.h>
using namespace std;

#define NAME ""
#define ll long long
#define pii pair < int , int >
#define fi first
#define se second
#define bit(x, i) (((x) >> (i)) & 1ll)
#define mask(x) (1ll << (x))
#define mem(f, x) memset(f, x, sizeof(f))
#define sz(x) (int32_t) (x.size())

constexpr int inf = 1e9;

int k;

vector < vector < vector < vector < int > > > > d;
vector < vector < int > > ans, tmp;

void combine(vector < vector < int > > &res, vector < vector < int > > &a, vector < vector < int > > &b) {
  for (int x = 0; x < k; x ++) {
    for (int y = 0; y < k; y ++) {
      for (int z = 0; z < k; z ++) {
        res[x][y] = min(res[x][y], a[x][z] + b[z][y]);
      }
    }
  }
}

signed main() {
  if (fopen(NAME".inp", "r")) {
    freopen(NAME".inp", "r", stdin);
    freopen(NAME".out", "w", stdout);
  }
  cin.tie(0)->sync_with_stdio(0);

  int n, m, q;
  cin >> k >> n >> m >> q;
  n --;
  n /= k;

  d.assign(n + 1, vector < vector < vector < int > > > (16, vector < vector < int > > (k, vector < int > (k, inf))));
  ans.assign(k, vector < int > (k, 0));
  tmp.assign(k, vector < int > (k, 0));

  for (; m --;) {
    int u, v, w;
    cin >> u >> v >> w;
    int i = u / k;
    u %= k;
    v %= k;
    d[i][0][u][v] = w;
  }

  for (int j = 1; mask(j) <= n; j ++) {
    for (int i = 0; i + mask(j) <= n; i ++) {
      combine(d[i][j], d[i][j - 1], d[i + mask(j - 1)][j - 1]);

//      cout << j << " " << i << " " << i + mask(j - 1) << "\n";
//      for (int x = 0; x < k; x ++) {
//        for (auto y = 0; y < k; y ++) {
//          cout << d[i][j][x][y] << " ";
//        }
//        cout << "\n";
//      }
//      cout << "\n";
    }
  }

  for (; q --;) {
    int u, v;
    cin >> u >> v;

    int diff = (v / k) - (u / k), stair = u / k;

    for (int i = 0; i < k; i ++) {
      for (int j = 0; j < k; j ++) {
        if (i != j) {
          ans[i][j] = inf;
        }
        else {
          ans[i][j] = 0;
        }
      }
    }


    if (diff < 0) {
      for (int i = 0; i < k; i ++) {
        for (int j = 0; j < k; j ++) {
          ans[i][j] = inf;
        }
      }
    }

    for (int j = 0; mask(j) <= diff; j ++) {
      if (bit(diff, j) && diff > 0) {
        swap(ans, tmp);

        for (int i = 0; i < k; i ++) {
          for (int j = 0; j < k; j ++) {
            ans[i][j] = inf;
          }
        }

        combine(ans, tmp, d[stair][j]);
        stair += mask(j);
      }
    }

    u %= k;
    v %= k;
    cout << (ans[u % k][v % k] == inf ? -1: ans[u % k][v % k]) << "\n";
  }

  return 0;
}

Compilation message

toll.cpp: In function 'int main()':
toll.cpp:33:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     freopen(NAME".inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
toll.cpp:34:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |     freopen(NAME".out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 106 ms 71248 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 2 ms 1884 KB Output is correct
6 Correct 2 ms 1628 KB Output is correct
7 Correct 2 ms 1628 KB Output is correct
8 Correct 108 ms 71276 KB Output is correct
9 Correct 109 ms 71168 KB Output is correct
10 Correct 90 ms 71228 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 104 ms 60912 KB Output is correct
2 Correct 0 ms 344 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 4 ms 1876 KB Output is correct
8 Correct 4 ms 1628 KB Output is correct
9 Correct 105 ms 72056 KB Output is correct
10 Correct 97 ms 55380 KB Output is correct
11 Correct 106 ms 62548 KB Output is correct
12 Correct 89 ms 54352 KB Output is correct
13 Correct 70 ms 32340 KB Output is correct
14 Correct 62 ms 33620 KB Output is correct
15 Correct 56 ms 31200 KB Output is correct
16 Correct 56 ms 31024 KB Output is correct

Subtask #3
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 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 1 ms 348 KB Output is correct
6 Correct 2 ms 1884 KB Output is correct
7 Correct 2 ms 1624 KB Output is correct
8 Correct 2 ms 1428 KB Output is correct
9 Correct 2 ms 1372 KB Output is correct
10 Correct 99 ms 72064 KB Output is correct
11 Correct 94 ms 62420 KB Output is correct
12 Correct 90 ms 55376 KB Output is correct
13 Correct 97 ms 55636 KB Output is correct
14 Correct 85 ms 54912 KB Output is correct
15 Correct 53 ms 31068 KB Output is correct
16 Correct 54 ms 31060 KB Output is correct

Subtask #4
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 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 1 ms 348 KB Output is correct
6 Correct 2 ms 1884 KB Output is correct
7 Correct 2 ms 1624 KB Output is correct
8 Correct 2 ms 1428 KB Output is correct
9 Correct 2 ms 1372 KB Output is correct
10 Correct 99 ms 72064 KB Output is correct
11 Correct 94 ms 62420 KB Output is correct
12 Correct 90 ms 55376 KB Output is correct
13 Correct 97 ms 55636 KB Output is correct
14 Correct 85 ms 54912 KB Output is correct
15 Correct 53 ms 31068 KB Output is correct
16 Correct 54 ms 31060 KB Output is correct
17 Correct 94 ms 62288 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 3 ms 1716 KB Output is correct
24 Correct 2 ms 1628 KB Output is correct
25 Correct 4 ms 1496 KB Output is correct
26 Correct 3 ms 1372 KB Output is correct
27 Correct 101 ms 72016 KB Output is correct
28 Correct 102 ms 55376 KB Output is correct
29 Correct 104 ms 55652 KB Output is correct
30 Correct 90 ms 55124 KB Output is correct

Subtask #5
44.0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 106 ms 71248 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 2 ms 1884 KB Output is correct
6 Correct 2 ms 1628 KB Output is correct
7 Correct 2 ms 1628 KB Output is correct
8 Correct 108 ms 71276 KB Output is correct
9 Correct 109 ms 71168 KB Output is correct
10 Correct 90 ms 71228 KB Output is correct
11 Correct 104 ms 60912 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 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 348 KB Output is correct
17 Correct 4 ms 1876 KB Output is correct
18 Correct 4 ms 1628 KB Output is correct
19 Correct 105 ms 72056 KB Output is correct
20 Correct 97 ms 55380 KB Output is correct
21 Correct 106 ms 62548 KB Output is correct
22 Correct 89 ms 54352 KB Output is correct
23 Correct 70 ms 32340 KB Output is correct
24 Correct 62 ms 33620 KB Output is correct
25 Correct 56 ms 31200 KB Output is correct
26 Correct 56 ms 31024 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 2 ms 1884 KB Output is correct
33 Correct 2 ms 1624 KB Output is correct
34 Correct 2 ms 1428 KB Output is correct
35 Correct 2 ms 1372 KB Output is correct
36 Correct 99 ms 72064 KB Output is correct
37 Correct 94 ms 62420 KB Output is correct
38 Correct 90 ms 55376 KB Output is correct
39 Correct 97 ms 55636 KB Output is correct
40 Correct 85 ms 54912 KB Output is correct
41 Correct 53 ms 31068 KB Output is correct
42 Correct 54 ms 31060 KB Output is correct
43 Correct 94 ms 62288 KB Output is correct
44 Correct 0 ms 344 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 0 ms 344 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 3 ms 1716 KB Output is correct
50 Correct 2 ms 1628 KB Output is correct
51 Correct 4 ms 1496 KB Output is correct
52 Correct 3 ms 1372 KB Output is correct
53 Correct 101 ms 72016 KB Output is correct
54 Correct 102 ms 55376 KB Output is correct
55 Correct 104 ms 55652 KB Output is correct
56 Correct 90 ms 55124 KB Output is correct
57 Correct 126 ms 55888 KB Output is correct
58 Correct 112 ms 72160 KB Output is correct
59 Correct 107 ms 62544 KB Output is correct