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Submission #304504

# Submission time Handle Problem Language Result Execution time Memory
304504 2020-09-21T12:34:10 Z icypiggy Comparing Plants (IOI20_plants) C++14
100 / 100
 366 ms 12316 KB 
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
const int n_bits=18;
const int inf = 1e9;
const int n_max = 2e5+5;
int arr[1<<(n_bits+1)];
int lazyadd[1<<(n_bits+1)];
int p_lt[n_max];
int p_rg[n_max];
int stash[n_max]; // a manual queue
int tallest[n_max];
int shortest[n_max];

struct segtree {
    int node = 1;
    int lazy = 0;
    segtree(){}
    void build(vector<int> &v) {
        assert(v.size()<(1<<n_bits));
        for(int i=0; i<(1<<n_bits); i++) {
            arr[i+(1<<n_bits)] = (i<(int)v.size() ? v[i] : inf);
        }
        for(int i=(1<<n_bits)-1; i>=1; i--) {
            arr[i] = min(arr[2*i], arr[2*i+1]);
        }
        for(int i=0; i<(1<<(n_bits+1)); i++) {
            lazyadd[i] = 0;
        }
    }

    void prefix_update(int x, int change) {
        if(x==-1) return;
        x += (1<<n_bits);
        lazyadd[x] += change;
        for(int i=0; i<n_bits; i++) {
            if(x&1) {
                lazyadd[x-1] += change;
            }
            arr[x/2] = min(arr[x]+lazyadd[x], arr[x^1]+lazyadd[x^1]);
            x=x/2;
        }
    }

    void decr(int left, int right) {
        prefix_update(left-1, 1);
        prefix_update(right,-1);
    }

    int find_and_remove_zero() {
        node = 1;
        lazy = 0;
        for(int i=0; i<n_bits; i++) {
            lazy += lazyadd[node];
            node *= 2;
            if(lazy + lazyadd[node] + arr[node]) node++;
        }
        int ans = node - (1<<n_bits);
        lazyadd[node] = 1e9;
        for(int i=0; i<n_bits; i++) {
            arr[node/2] = min(arr[node]+lazyadd[node], arr[node^1]+lazyadd[node^1]);
            node = node/2;
        }
        return ans;
    }
};

void lexi_smallest(int k, vector<int> &r, int* ptr, int* ord) {
    segtree s;
    s.build(r);
    int n = r.size();
    stash[0] = n;
    ord[n] = -1;
    int* fr = stash+1;
    int* bk = stash+1;
    for(int i=0; i<(int)r.size(); i++) {
        while(lazyadd[1] + arr[1]) {
            s.decr((*fr++)-k+1+n, n-1);
        }
        int p = s.find_and_remove_zero();
        ord[p] = i;
        if(p<k-1) {
            s.prefix_update(p, -1);
            *bk++ = p;
        } else {
            s.decr(p-k+1, p);
        }
        ptr[p] = ord[*(fr-1)];
    }
}
void init(int k, std::vector<int> r) {
    lexi_smallest(k,r,p_lt, tallest);
    for(int &i: r) i = k-1-i;
    lexi_smallest(k,r,p_rg, shortest);
}

int compare_plants(int x, int y) {
    if(x>y) return -compare_plants(y,x);
    if(tallest[x]>tallest[y] || p_rg[y]>=shortest[x]) return -1;
    if(shortest[x]>shortest[y] || p_lt[y]>=tallest[x]) return 1;
	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4480 KB Output is correct
2 Correct 4 ms 4480 KB Output is correct
3 Correct 5 ms 4480 KB Output is correct
4 Correct 4 ms 4480 KB Output is correct
5 Correct 4 ms 4480 KB Output is correct
6 Correct 73 ms 7292 KB Output is correct
7 Correct 96 ms 7804 KB Output is correct
8 Correct 224 ms 11640 KB Output is correct
9 Correct 219 ms 11512 KB Output is correct
10 Correct 225 ms 11512 KB Output is correct
11 Correct 220 ms 11512 KB Output is correct
12 Correct 230 ms 11512 KB Output is correct
13 Correct 218 ms 11512 KB Output is correct
14 Correct 240 ms 11512 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4480 KB Output is correct
2 Correct 5 ms 4480 KB Output is correct
3 Correct 4 ms 4480 KB Output is correct
4 Correct 4 ms 4480 KB Output is correct
5 Correct 5 ms 4480 KB Output is correct
6 Correct 8 ms 4480 KB Output is correct
7 Correct 79 ms 7496 KB Output is correct
8 Correct 6 ms 4480 KB Output is correct
9 Correct 7 ms 4480 KB Output is correct
10 Correct 79 ms 7416 KB Output is correct
11 Correct 73 ms 7288 KB Output is correct
12 Correct 83 ms 7544 KB Output is correct
13 Correct 78 ms 7416 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4480 KB Output is correct
2 Correct 5 ms 4480 KB Output is correct
3 Correct 4 ms 4480 KB Output is correct
4 Correct 4 ms 4480 KB Output is correct
5 Correct 5 ms 4480 KB Output is correct
6 Correct 8 ms 4480 KB Output is correct
7 Correct 79 ms 7496 KB Output is correct
8 Correct 6 ms 4480 KB Output is correct
9 Correct 7 ms 4480 KB Output is correct
10 Correct 79 ms 7416 KB Output is correct
11 Correct 73 ms 7288 KB Output is correct
12 Correct 83 ms 7544 KB Output is correct
13 Correct 78 ms 7416 KB Output is correct
14 Correct 105 ms 7800 KB Output is correct
15 Correct 358 ms 11896 KB Output is correct
16 Correct 99 ms 7808 KB Output is correct
17 Correct 352 ms 12024 KB Output is correct
18 Correct 216 ms 11896 KB Output is correct
19 Correct 210 ms 11896 KB Output is correct
20 Correct 366 ms 12316 KB Output is correct

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4480 KB Output is correct
2 Correct 4 ms 4480 KB Output is correct
3 Correct 76 ms 7288 KB Output is correct
4 Correct 221 ms 11512 KB Output is correct
5 Correct 248 ms 11512 KB Output is correct
6 Correct 333 ms 11516 KB Output is correct
7 Correct 335 ms 11512 KB Output is correct
8 Correct 339 ms 11768 KB Output is correct
9 Correct 225 ms 11512 KB Output is correct
10 Correct 216 ms 11516 KB Output is correct
11 Correct 209 ms 11464 KB Output is correct
12 Correct 218 ms 11512 KB Output is correct
13 Correct 275 ms 11768 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4480 KB Output is correct
2 Correct 5 ms 4480 KB Output is correct
3 Correct 6 ms 4480 KB Output is correct
4 Correct 4 ms 4480 KB Output is correct
5 Correct 4 ms 4480 KB Output is correct
6 Correct 6 ms 4480 KB Output is correct
7 Correct 19 ms 5120 KB Output is correct
8 Correct 25 ms 5112 KB Output is correct
9 Correct 20 ms 5120 KB Output is correct
10 Correct 19 ms 5120 KB Output is correct
11 Correct 19 ms 5120 KB Output is correct
12 Correct 20 ms 5120 KB Output is correct
13 Correct 19 ms 5120 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4480 KB Output is correct
2 Correct 4 ms 4480 KB Output is correct
3 Correct 4 ms 4480 KB Output is correct
4 Correct 6 ms 4480 KB Output is correct
5 Correct 6 ms 4480 KB Output is correct
6 Correct 221 ms 11512 KB Output is correct
7 Correct 280 ms 11512 KB Output is correct
8 Correct 359 ms 11512 KB Output is correct
9 Correct 338 ms 11896 KB Output is correct
10 Correct 231 ms 11488 KB Output is correct
11 Correct 241 ms 11768 KB Output is correct
12 Correct 209 ms 11512 KB Output is correct
13 Correct 224 ms 11512 KB Output is correct
14 Correct 282 ms 11588 KB Output is correct
15 Correct 303 ms 11640 KB Output is correct
16 Correct 199 ms 11512 KB Output is correct
17 Correct 236 ms 11640 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4480 KB Output is correct
2 Correct 4 ms 4480 KB Output is correct
3 Correct 5 ms 4480 KB Output is correct
4 Correct 4 ms 4480 KB Output is correct
5 Correct 4 ms 4480 KB Output is correct
6 Correct 73 ms 7292 KB Output is correct
7 Correct 96 ms 7804 KB Output is correct
8 Correct 224 ms 11640 KB Output is correct
9 Correct 219 ms 11512 KB Output is correct
10 Correct 225 ms 11512 KB Output is correct
11 Correct 220 ms 11512 KB Output is correct
12 Correct 230 ms 11512 KB Output is correct
13 Correct 218 ms 11512 KB Output is correct
14 Correct 240 ms 11512 KB Output is correct
15 Correct 5 ms 4480 KB Output is correct
16 Correct 5 ms 4480 KB Output is correct
17 Correct 4 ms 4480 KB Output is correct
18 Correct 4 ms 4480 KB Output is correct
19 Correct 5 ms 4480 KB Output is correct
20 Correct 8 ms 4480 KB Output is correct
21 Correct 79 ms 7496 KB Output is correct
22 Correct 6 ms 4480 KB Output is correct
23 Correct 7 ms 4480 KB Output is correct
24 Correct 79 ms 7416 KB Output is correct
25 Correct 73 ms 7288 KB Output is correct
26 Correct 83 ms 7544 KB Output is correct
27 Correct 78 ms 7416 KB Output is correct
28 Correct 105 ms 7800 KB Output is correct
29 Correct 358 ms 11896 KB Output is correct
30 Correct 99 ms 7808 KB Output is correct
31 Correct 352 ms 12024 KB Output is correct
32 Correct 216 ms 11896 KB Output is correct
33 Correct 210 ms 11896 KB Output is correct
34 Correct 366 ms 12316 KB Output is correct
35 Correct 4 ms 4480 KB Output is correct
36 Correct 4 ms 4480 KB Output is correct
37 Correct 76 ms 7288 KB Output is correct
38 Correct 221 ms 11512 KB Output is correct
39 Correct 248 ms 11512 KB Output is correct
40 Correct 333 ms 11516 KB Output is correct
41 Correct 335 ms 11512 KB Output is correct
42 Correct 339 ms 11768 KB Output is correct
43 Correct 225 ms 11512 KB Output is correct
44 Correct 216 ms 11516 KB Output is correct
45 Correct 209 ms 11464 KB Output is correct
46 Correct 218 ms 11512 KB Output is correct
47 Correct 275 ms 11768 KB Output is correct
48 Correct 5 ms 4480 KB Output is correct
49 Correct 5 ms 4480 KB Output is correct
50 Correct 6 ms 4480 KB Output is correct
51 Correct 4 ms 4480 KB Output is correct
52 Correct 4 ms 4480 KB Output is correct
53 Correct 6 ms 4480 KB Output is correct
54 Correct 19 ms 5120 KB Output is correct
55 Correct 25 ms 5112 KB Output is correct
56 Correct 20 ms 5120 KB Output is correct
57 Correct 19 ms 5120 KB Output is correct
58 Correct 19 ms 5120 KB Output is correct
59 Correct 20 ms 5120 KB Output is correct
60 Correct 19 ms 5120 KB Output is correct
61 Correct 72 ms 7288 KB Output is correct
62 Correct 93 ms 7672 KB Output is correct
63 Correct 229 ms 11512 KB Output is correct
64 Correct 250 ms 11452 KB Output is correct
65 Correct 297 ms 11512 KB Output is correct
66 Correct 330 ms 11512 KB Output is correct
67 Correct 366 ms 11768 KB Output is correct
68 Correct 223 ms 11512 KB Output is correct
69 Correct 255 ms 11768 KB Output is correct
70 Correct 219 ms 11512 KB Output is correct
71 Correct 245 ms 11512 KB Output is correct
72 Correct 283 ms 11512 KB Output is correct
73 Correct 314 ms 11640 KB Output is correct
74 Correct 216 ms 11512 KB Output is correct
75 Correct 223 ms 11516 KB Output is correct