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Submission #646344

# Submission time Handle Problem Language Result Execution time Memory
646344 2022-09-29T15:41:10 Z Alex_tz307 Peru (RMI20_peru) C++17
100 / 100
 116 ms 66308 KB 
#include <bits/stdc++.h>
#include "peru.h"
 
using namespace std;
 
const int kN = 2e6 + 5e5;
const int base = 23;
const int mod = 1e9 + 7;
 
int a[1 + kN], stk[1 + kN], prv[1 + kN], nxt[1 + kN], dq[kN], dqMax[kN];
int64_t dp[1 + kN];
 
void minSelf(int64_t &x, int64_t y) {
  if (y < x) {
    x = y;
  }
}
 
int64_t cost(int index) {
  return dp[prv[index]] + a[index];
}
 
int add(int x, int y) {
  x += y;
  if (x >= mod) {
    x -= mod;
  }
  return x;
}
 
int mult(int x, int y) {
  return (int64_t)x * y % mod;
}
 
int solve(int n, int k, int* v) {
  for (int i = 1; i <= n; ++i) {
    a[i] = v[i - 1];
  }
 
  int vf = 0;
  for (int i = 1; i <= n; ++i) {
    nxt[i] = n + 1;
 
    while (vf && a[stk[vf]] <= a[i]) { /// <=
      nxt[stk[vf]] = i;
      vf -= 1;
    }
 
    prv[i] = stk[vf];
    stk[++vf] = i;
  }
 
  int res = 0, l = 0, r = -1, lmax = 0, rmax = -1;
  vf = 0;
  for (int i = 1; i <= n; ++i) {
    while (vf && a[stk[vf]] <= a[i]) { /// <=
      vf -= 1;
    }
 
    if (nxt[i] - prv[i] >= k) {
      while (l <= r && cost(i) <= cost(dq[r])) {
        r -= 1;
      }
      dq[++r] = i;
    } else if (vf == 0 || cost(i) < cost(stk[vf])) {
      stk[++vf] = i;
    }
 
    while (l <= r && prv[dq[l]] <= i - k) {
      l += 1;
    }
 
    while (lmax <= rmax && a[dqMax[rmax]] <= a[i]) {
      rmax -= 1;
    }
    dqMax[++rmax] = i;
    while (dqMax[lmax] <= i - k) {
      lmax += 1;
    }
 
    if (i >= k) {
      dp[i] = dp[i - k] + a[dqMax[lmax]];
    } else {
      dp[i] = a[dqMax[lmax]];
    }
    if (l <= r) {
      minSelf(dp[i], cost(dq[l]));
    }
    if (vf) {
      minSelf(dp[i], cost(stk[vf]));
    }
 
    res = add(mult(res, base), dp[i] % mod);
  }
 
  return res;
}

Subtask #1
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 17 ms 9988 KB Output is correct
16 Correct 16 ms 10068 KB Output is correct
17 Correct 18 ms 10368 KB Output is correct
18 Correct 25 ms 9772 KB Output is correct
19 Correct 25 ms 9800 KB Output is correct
20 Correct 25 ms 9860 KB Output is correct
21 Correct 17 ms 10012 KB Output is correct
22 Correct 17 ms 10328 KB Output is correct
23 Correct 19 ms 10324 KB Output is correct
24 Correct 20 ms 10660 KB Output is correct
25 Correct 17 ms 10736 KB Output is correct
26 Correct 16 ms 10140 KB Output is correct
27 Correct 17 ms 9940 KB Output is correct
28 Correct 17 ms 9884 KB Output is correct
29 Correct 16 ms 9868 KB Output is correct
30 Correct 18 ms 10036 KB Output is correct
31 Correct 17 ms 10420 KB Output is correct
32 Correct 16 ms 9940 KB Output is correct
33 Correct 16 ms 10452 KB Output is correct

Subtask #3
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 9988 KB Output is correct
2 Correct 16 ms 10068 KB Output is correct
3 Correct 18 ms 10368 KB Output is correct
4 Correct 25 ms 9772 KB Output is correct
5 Correct 25 ms 9800 KB Output is correct
6 Correct 25 ms 9860 KB Output is correct
7 Correct 17 ms 10012 KB Output is correct
8 Correct 17 ms 10328 KB Output is correct
9 Correct 19 ms 10324 KB Output is correct
10 Correct 20 ms 10660 KB Output is correct
11 Correct 17 ms 10736 KB Output is correct
12 Correct 16 ms 10140 KB Output is correct
13 Correct 17 ms 9940 KB Output is correct
14 Correct 17 ms 9884 KB Output is correct
15 Correct 16 ms 9868 KB Output is correct
16 Correct 18 ms 10036 KB Output is correct
17 Correct 17 ms 10420 KB Output is correct
18 Correct 16 ms 9940 KB Output is correct
19 Correct 16 ms 10452 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 102 ms 62060 KB Output is correct
35 Correct 98 ms 61108 KB Output is correct
36 Correct 102 ms 61012 KB Output is correct
37 Correct 100 ms 62248 KB Output is correct
38 Correct 110 ms 61356 KB Output is correct
39 Correct 104 ms 61412 KB Output is correct
40 Correct 101 ms 63564 KB Output is correct
41 Correct 102 ms 63992 KB Output is correct
42 Correct 100 ms 62564 KB Output is correct
43 Correct 38 ms 24124 KB Output is correct
44 Correct 90 ms 35708 KB Output is correct
45 Correct 91 ms 35660 KB Output is correct
46 Correct 91 ms 35680 KB Output is correct
47 Correct 104 ms 61256 KB Output is correct
48 Correct 101 ms 61792 KB Output is correct
49 Correct 101 ms 61248 KB Output is correct
50 Correct 101 ms 60676 KB Output is correct
51 Correct 103 ms 61004 KB Output is correct
52 Correct 103 ms 61120 KB Output is correct
53 Correct 116 ms 60588 KB Output is correct
54 Correct 104 ms 63860 KB Output is correct
55 Correct 105 ms 60224 KB Output is correct
56 Correct 101 ms 60216 KB Output is correct
57 Correct 102 ms 60064 KB Output is correct
58 Correct 100 ms 60900 KB Output is correct
59 Correct 98 ms 61004 KB Output is correct
60 Correct 104 ms 61132 KB Output is correct
61 Correct 109 ms 66308 KB Output is correct
62 Correct 102 ms 63436 KB Output is correct
63 Correct 106 ms 64404 KB Output is correct