oj.uz

Submission #213209

# Submission time Handle Problem Language Result Execution time Memory
213209 2020-03-25T09:00:17 Z eriksuenderhauf Constellation 3 (JOI20_constellation3) C++11
100 / 100
 355 ms 104560 KB 
//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define trav(x,a) for (const auto& x: a)
#define sz(x) (int)(x).size()
#define mem(a,v) memset((a), (v), sizeof (a))
#define enl printf("\n")
#define case(t) printf("Case #%d: ", (t))
#define ni(n) scanf("%d", &(n))
#define nl(n) scanf("%I64d", &(n))
#define nai(a, n) for (int _i = 0; _i < (n); _i++) ni(a[_i])
#define nal(a, n) for (int _i = 0; _i < (n); _i++) nl(a[_i])
#define pri(n) printf("%d\n", (n))
#define prl(n) printf("%I64d\n", (n))
#define pii pair<int, int>
#define pll pair<long long, long long>
#define vii vector<pii>
#define vll vector<pll>
#define vi vector<int>
#define vl vector<long long>
#define pb push_back
#define mp make_pair
#define st first
#define nd second
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef cc_hash_table<int,int,hash<int>> ht;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> oset;
const double pi = acos(-1);
const int mod = 1e9 + 7;
const int inf = 1e9 + 7;
const int N = 1e6 + 5;
const double eps = 1e-9;

#define log2(x) (31 - __builtin_clz(x))

struct sparse_table {
  int n;
  vector<int> a;
  vector<vector<int>> st;
  int combine(int dl, int dr) {
    return a[dl] > a[dr] ? dl : dr;
  }
  sparse_table() {}
  sparse_table(vector<int> & a) : n(a.size()), a(a), st(log2(n) + 1, vector<int>(n)) {
    for (int i = 0; i < n; i++)
      st[0][i] = i;
    for (int j = 1; 1 << j <= n; j++)
      for (int i = 0; i + (1 << j) <= n; i++)
        st[j][i] = combine(st[j - 1][i], st[j - 1][i + (1 << (j - 1))]);
  }
  // query the data on the range [l, r[
  int query(int l, int r) {
    int s = log2(r - l);
    return combine(st[s][l], st[s][r - (1 << s)]);
  }
};

multiset<pll> stX[N];
ll dp1[N], dp2[N];

void join(int i, pll jj) {
  int j = jj.nd;
  if (j < 0 || i == j) return;
  if (sz(stX[j]) > sz(stX[i]))
    swap(stX[i], stX[j]), swap(dp1[i], dp1[j]), swap(dp2[i], dp2[j]);
  trav(x, stX[j])
    stX[i].insert({x.st, x.nd - dp1[j] + dp1[i]});
  dp2[i] += dp2[j] + dp1[j];
}

pll dfs(int l, int r, int i, sparse_table& s) {
  if (l > r) return {0, -1};
  int id = l;
  if (l != r) {
    id = s.query(l, r+1);
    int mx = s.a[id];
    join(id, dfs(l, id - 1, mx, s));
    join(id, dfs(id + 1, r, mx, s));
  }
  while (!stX[id].empty() && stX[id].begin()->st <= i) {
    dp1[id] = max(dp1[id], stX[id].begin()->nd);
    stX[id].erase(stX[id].begin());
  }
  return {dp1[id] + dp2[id], id};
}

int main() {
  int n; ni(n);
  vector<int> a(n+1);
  for (int i = 1; i <= n; i++) {
    scanf("%d", &a[i]);
  }
  int m; ni(m);
  ll ans = 0;
  for (int i = 1; i <= m; i++) {
    int x, y, c; scanf("%d %d %d", &x, &y, &c);
    stX[x].insert({y, c});
    ans += c;
  }
  sparse_table s(a);
  printf("%lld\n", ans - dfs(1, n, n+1, s).st);
  return 0;
}

Compilation message

constellation3.cpp: In function 'int main()':
constellation3.cpp:10:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define ni(n) scanf("%d", &(n))
               ~~~~~^~~~~~~~~~~~
constellation3.cpp:91:10: note: in expansion of macro 'ni'
   int n; ni(n);
          ^~
constellation3.cpp:94:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &a[i]);
     ~~~~~^~~~~~~~~~~~~
constellation3.cpp:10:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define ni(n) scanf("%d", &(n))
               ~~~~~^~~~~~~~~~~~
constellation3.cpp:96:10: note: in expansion of macro 'ni'
   int m; ni(m);
          ^~
constellation3.cpp:99:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     int x, y, c; scanf("%d %d %d", &x, &y, &c);
                  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 47360 KB Output is correct
2 Correct 28 ms 47360 KB Output is correct
3 Correct 28 ms 47360 KB Output is correct
4 Correct 28 ms 47360 KB Output is correct
5 Correct 28 ms 47360 KB Output is correct
6 Correct 28 ms 47360 KB Output is correct
7 Correct 29 ms 47360 KB Output is correct
8 Correct 29 ms 47360 KB Output is correct
9 Correct 28 ms 47356 KB Output is correct
10 Correct 29 ms 47360 KB Output is correct
11 Correct 30 ms 47360 KB Output is correct
12 Correct 28 ms 47360 KB Output is correct
13 Correct 29 ms 47360 KB Output is correct
14 Correct 28 ms 47360 KB Output is correct
15 Correct 29 ms 47360 KB Output is correct
16 Correct 28 ms 47360 KB Output is correct
17 Correct 29 ms 47360 KB Output is correct
18 Correct 28 ms 47360 KB Output is correct
19 Correct 28 ms 47360 KB Output is correct
20 Correct 29 ms 47352 KB Output is correct
21 Correct 29 ms 47360 KB Output is correct
22 Correct 29 ms 47360 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 47360 KB Output is correct
2 Correct 28 ms 47360 KB Output is correct
3 Correct 28 ms 47360 KB Output is correct
4 Correct 28 ms 47360 KB Output is correct
5 Correct 28 ms 47360 KB Output is correct
6 Correct 28 ms 47360 KB Output is correct
7 Correct 29 ms 47360 KB Output is correct
8 Correct 29 ms 47360 KB Output is correct
9 Correct 28 ms 47356 KB Output is correct
10 Correct 29 ms 47360 KB Output is correct
11 Correct 30 ms 47360 KB Output is correct
12 Correct 28 ms 47360 KB Output is correct
13 Correct 29 ms 47360 KB Output is correct
14 Correct 28 ms 47360 KB Output is correct
15 Correct 29 ms 47360 KB Output is correct
16 Correct 28 ms 47360 KB Output is correct
17 Correct 29 ms 47360 KB Output is correct
18 Correct 28 ms 47360 KB Output is correct
19 Correct 28 ms 47360 KB Output is correct
20 Correct 29 ms 47352 KB Output is correct
21 Correct 29 ms 47360 KB Output is correct
22 Correct 29 ms 47360 KB Output is correct
23 Correct 29 ms 47608 KB Output is correct
24 Correct 30 ms 47616 KB Output is correct
25 Correct 31 ms 47616 KB Output is correct
26 Correct 30 ms 47608 KB Output is correct
27 Correct 30 ms 47616 KB Output is correct
28 Correct 31 ms 47616 KB Output is correct
29 Correct 30 ms 47616 KB Output is correct
30 Correct 33 ms 47616 KB Output is correct
31 Correct 30 ms 47616 KB Output is correct
32 Correct 30 ms 47744 KB Output is correct
33 Correct 30 ms 47744 KB Output is correct
34 Correct 30 ms 47744 KB Output is correct
35 Correct 30 ms 47744 KB Output is correct
36 Correct 31 ms 47744 KB Output is correct
37 Correct 31 ms 47744 KB Output is correct
38 Correct 30 ms 47744 KB Output is correct
39 Correct 30 ms 47744 KB Output is correct
40 Correct 30 ms 47736 KB Output is correct
41 Correct 30 ms 47872 KB Output is correct
42 Correct 30 ms 47744 KB Output is correct
43 Correct 31 ms 47744 KB Output is correct
44 Correct 30 ms 47616 KB Output is correct

Subtask #3
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 47360 KB Output is correct
2 Correct 28 ms 47360 KB Output is correct
3 Correct 28 ms 47360 KB Output is correct
4 Correct 28 ms 47360 KB Output is correct
5 Correct 28 ms 47360 KB Output is correct
6 Correct 28 ms 47360 KB Output is correct
7 Correct 29 ms 47360 KB Output is correct
8 Correct 29 ms 47360 KB Output is correct
9 Correct 28 ms 47356 KB Output is correct
10 Correct 29 ms 47360 KB Output is correct
11 Correct 30 ms 47360 KB Output is correct
12 Correct 28 ms 47360 KB Output is correct
13 Correct 29 ms 47360 KB Output is correct
14 Correct 28 ms 47360 KB Output is correct
15 Correct 29 ms 47360 KB Output is correct
16 Correct 28 ms 47360 KB Output is correct
17 Correct 29 ms 47360 KB Output is correct
18 Correct 28 ms 47360 KB Output is correct
19 Correct 28 ms 47360 KB Output is correct
20 Correct 29 ms 47352 KB Output is correct
21 Correct 29 ms 47360 KB Output is correct
22 Correct 29 ms 47360 KB Output is correct
23 Correct 29 ms 47608 KB Output is correct
24 Correct 30 ms 47616 KB Output is correct
25 Correct 31 ms 47616 KB Output is correct
26 Correct 30 ms 47608 KB Output is correct
27 Correct 30 ms 47616 KB Output is correct
28 Correct 31 ms 47616 KB Output is correct
29 Correct 30 ms 47616 KB Output is correct
30 Correct 33 ms 47616 KB Output is correct
31 Correct 30 ms 47616 KB Output is correct
32 Correct 30 ms 47744 KB Output is correct
33 Correct 30 ms 47744 KB Output is correct
34 Correct 30 ms 47744 KB Output is correct
35 Correct 30 ms 47744 KB Output is correct
36 Correct 31 ms 47744 KB Output is correct
37 Correct 31 ms 47744 KB Output is correct
38 Correct 30 ms 47744 KB Output is correct
39 Correct 30 ms 47744 KB Output is correct
40 Correct 30 ms 47736 KB Output is correct
41 Correct 30 ms 47872 KB Output is correct
42 Correct 30 ms 47744 KB Output is correct
43 Correct 31 ms 47744 KB Output is correct
44 Correct 30 ms 47616 KB Output is correct
45 Correct 265 ms 78320 KB Output is correct
46 Correct 265 ms 77816 KB Output is correct
47 Correct 270 ms 77956 KB Output is correct
48 Correct 259 ms 78060 KB Output is correct
49 Correct 265 ms 77576 KB Output is correct
50 Correct 268 ms 77320 KB Output is correct
51 Correct 263 ms 77704 KB Output is correct
52 Correct 277 ms 78200 KB Output is correct
53 Correct 266 ms 77812 KB Output is correct
54 Correct 349 ms 92268 KB Output is correct
55 Correct 353 ms 90624 KB Output is correct
56 Correct 348 ms 89996 KB Output is correct
57 Correct 353 ms 89872 KB Output is correct
58 Correct 335 ms 93832 KB Output is correct
59 Correct 349 ms 93708 KB Output is correct
60 Correct 185 ms 90472 KB Output is correct
61 Correct 355 ms 104560 KB Output is correct
62 Correct 347 ms 92808 KB Output is correct
63 Correct 331 ms 99704 KB Output is correct
64 Correct 347 ms 102024 KB Output is correct
65 Correct 332 ms 92672 KB Output is correct
66 Correct 352 ms 102656 KB Output is correct