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Submission #218849

# Submission time Handle Problem Language Result Execution time Memory
218849 2020-04-02T20:16:16 Z IgorI Seats (IOI18_seats) C++17
100 / 100
 3546 ms 226420 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 3e6 + 55;

typedef pair<long long, int> T;

int n, m, k;
vector<vector<int> > p;
int x[N], y[N];
T tree[1 << 23];
long long push[1 << 23];

void Push(int V, int L, int R, int M)
{
    tree[2 * V + 1].first += push[V];
    push[2 * V + 1] += push[V];
    tree[2 * V + 2].first += push[V];
    push[2 * V + 2] += push[V];
    push[V] = 0;
}

void add(int l, int r, long long val, int L = 0, int R = (n - 2) * (m - 2), int V = 0)
{
    if (r <= L || R <= l)
        return;
    if (l <= L && R <= r)
    {
        tree[V].first += val;
        push[V] += val;
        return;
    }
    int M = (L + R) / 2;
    Push(V, L, R, M);
    add(l, r, val, L, M, 2 * V + 1);
    add(l, r, val, M, R, 2 * V + 2);
    tree[V].first = min(tree[2 * V + 1].first, tree[2 * V + 2].first);
    tree[V].second = 0;
    if (tree[2 * V + 1].first == tree[V].first) tree[V].second += tree[2 * V + 1].second;
    if (tree[2 * V + 2].first == tree[V].first) tree[V].second += tree[2 * V + 2].second;
}

void change_tile(int i, int j, int t)
{
    int x[4] = {p[i][j], p[i + 1][j], p[i + 1][j + 1], p[i][j + 1]};
    sort(x, x + 4);
    add(x[0], x[1], t);
    add(x[2], x[3], t * n * m);
}

void give_initial_chart(int h, int w, vector<int> r, vector<int> c)
{
    T kek = {0, 1};
    fill(tree, tree + (1 << 23), kek);
    k = h * w;
    n = h + 2;
    m = w + 2;
    for (int i = 0; i < n; i++)
    {
        vector<int> e(m, k);
        p.push_back(e);
    }
    int t = h * w;
    for (int i = 0; i < t; i++)
    {
        p[r[i] + 1][c[i] + 1] = i;
    }
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < m; j++)
        {
            x[p[i][j]] = i;
            y[p[i][j]] = j;
        }
    }
    for (int i = 0; i + 1 < n; i++)
    {
        for (int j = 0; j + 1 < m; j++)
        {
            change_tile(i, j, 1);
        }
    }
}

void arc(int i, int j, int t)
{
    change_tile(i - 1, j - 1, t);
    change_tile(i - 1, j, t);
    change_tile(i, j - 1, t);
    change_tile(i, j, t);
}

int swap_seats(int a, int b)
{
    int i1 = x[a], j1 = y[a];
    int i2 = x[b], j2 = y[b];
    arc(i1, j1, -1);
    arc(i2, j2, -1);
    swap(p[i1][j1], p[i2][j2]);
    swap(x[a], x[b]);
    swap(y[a], y[b]);
    arc(i1, j1, 1);
    arc(i2, j2, 1);
    if (tree[0].first == 4) return tree[0].second;
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 131832 KB Output is correct
2 Correct 81 ms 131832 KB Output is correct
3 Correct 91 ms 131832 KB Output is correct
4 Correct 78 ms 131832 KB Output is correct
5 Correct 79 ms 131832 KB Output is correct
6 Correct 88 ms 131832 KB Output is correct
7 Correct 89 ms 131832 KB Output is correct
8 Correct 86 ms 131832 KB Output is correct
9 Correct 89 ms 131832 KB Output is correct
10 Correct 95 ms 131792 KB Output is correct
11 Correct 90 ms 131832 KB Output is correct
12 Correct 77 ms 131832 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 131832 KB Output is correct
2 Correct 81 ms 131832 KB Output is correct
3 Correct 91 ms 131832 KB Output is correct
4 Correct 78 ms 131832 KB Output is correct
5 Correct 79 ms 131832 KB Output is correct
6 Correct 88 ms 131832 KB Output is correct
7 Correct 89 ms 131832 KB Output is correct
8 Correct 86 ms 131832 KB Output is correct
9 Correct 89 ms 131832 KB Output is correct
10 Correct 95 ms 131792 KB Output is correct
11 Correct 90 ms 131832 KB Output is correct
12 Correct 77 ms 131832 KB Output is correct
13 Correct 131 ms 132320 KB Output is correct
14 Correct 142 ms 132216 KB Output is correct
15 Correct 113 ms 132344 KB Output is correct
16 Correct 100 ms 132788 KB Output is correct
17 Correct 124 ms 132344 KB Output is correct
18 Correct 120 ms 132216 KB Output is correct
19 Correct 118 ms 132508 KB Output is correct
20 Correct 117 ms 132600 KB Output is correct
21 Correct 103 ms 132344 KB Output is correct
22 Correct 104 ms 132792 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2315 ms 175864 KB Output is correct
2 Correct 1284 ms 175552 KB Output is correct
3 Correct 1267 ms 175608 KB Output is correct
4 Correct 1101 ms 175736 KB Output is correct
5 Correct 1111 ms 175604 KB Output is correct
6 Correct 1081 ms 175608 KB Output is correct
7 Correct 1185 ms 175632 KB Output is correct
8 Correct 1264 ms 175608 KB Output is correct
9 Correct 1239 ms 175736 KB Output is correct
10 Correct 1199 ms 175608 KB Output is correct

Subtask #4
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 135 ms 132344 KB Output is correct
2 Correct 232 ms 136184 KB Output is correct
3 Correct 1139 ms 175540 KB Output is correct
4 Correct 2317 ms 175748 KB Output is correct
5 Correct 1093 ms 187312 KB Output is correct
6 Correct 2324 ms 226420 KB Output is correct
7 Correct 1146 ms 179552 KB Output is correct
8 Correct 1339 ms 175740 KB Output is correct
9 Correct 1277 ms 176052 KB Output is correct
10 Correct 1203 ms 180336 KB Output is correct
11 Correct 1177 ms 199052 KB Output is correct

Subtask #5
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 127 ms 132688 KB Output is correct
2 Correct 169 ms 132840 KB Output is correct
3 Correct 222 ms 132724 KB Output is correct
4 Correct 295 ms 132724 KB Output is correct
5 Correct 439 ms 133332 KB Output is correct
6 Correct 1678 ms 187700 KB Output is correct
7 Correct 1942 ms 188860 KB Output is correct
8 Correct 1575 ms 189068 KB Output is correct
9 Correct 2971 ms 188952 KB Output is correct
10 Correct 1497 ms 188976 KB Output is correct
11 Correct 1500 ms 188976 KB Output is correct
12 Correct 1417 ms 188976 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 131832 KB Output is correct
2 Correct 81 ms 131832 KB Output is correct
3 Correct 91 ms 131832 KB Output is correct
4 Correct 78 ms 131832 KB Output is correct
5 Correct 79 ms 131832 KB Output is correct
6 Correct 88 ms 131832 KB Output is correct
7 Correct 89 ms 131832 KB Output is correct
8 Correct 86 ms 131832 KB Output is correct
9 Correct 89 ms 131832 KB Output is correct
10 Correct 95 ms 131792 KB Output is correct
11 Correct 90 ms 131832 KB Output is correct
12 Correct 77 ms 131832 KB Output is correct
13 Correct 131 ms 132320 KB Output is correct
14 Correct 142 ms 132216 KB Output is correct
15 Correct 113 ms 132344 KB Output is correct
16 Correct 100 ms 132788 KB Output is correct
17 Correct 124 ms 132344 KB Output is correct
18 Correct 120 ms 132216 KB Output is correct
19 Correct 118 ms 132508 KB Output is correct
20 Correct 117 ms 132600 KB Output is correct
21 Correct 103 ms 132344 KB Output is correct
22 Correct 104 ms 132792 KB Output is correct
23 Correct 2315 ms 175864 KB Output is correct
24 Correct 1284 ms 175552 KB Output is correct
25 Correct 1267 ms 175608 KB Output is correct
26 Correct 1101 ms 175736 KB Output is correct
27 Correct 1111 ms 175604 KB Output is correct
28 Correct 1081 ms 175608 KB Output is correct
29 Correct 1185 ms 175632 KB Output is correct
30 Correct 1264 ms 175608 KB Output is correct
31 Correct 1239 ms 175736 KB Output is correct
32 Correct 1199 ms 175608 KB Output is correct
33 Correct 135 ms 132344 KB Output is correct
34 Correct 232 ms 136184 KB Output is correct
35 Correct 1139 ms 175540 KB Output is correct
36 Correct 2317 ms 175748 KB Output is correct
37 Correct 1093 ms 187312 KB Output is correct
38 Correct 2324 ms 226420 KB Output is correct
39 Correct 1146 ms 179552 KB Output is correct
40 Correct 1339 ms 175740 KB Output is correct
41 Correct 1277 ms 176052 KB Output is correct
42 Correct 1203 ms 180336 KB Output is correct
43 Correct 1177 ms 199052 KB Output is correct
44 Correct 127 ms 132688 KB Output is correct
45 Correct 169 ms 132840 KB Output is correct
46 Correct 222 ms 132724 KB Output is correct
47 Correct 295 ms 132724 KB Output is correct
48 Correct 439 ms 133332 KB Output is correct
49 Correct 1678 ms 187700 KB Output is correct
50 Correct 1942 ms 188860 KB Output is correct
51 Correct 1575 ms 189068 KB Output is correct
52 Correct 2971 ms 188952 KB Output is correct
53 Correct 1497 ms 188976 KB Output is correct
54 Correct 1500 ms 188976 KB Output is correct
55 Correct 1417 ms 188976 KB Output is correct
56 Correct 194 ms 133340 KB Output is correct
57 Correct 370 ms 133364 KB Output is correct
58 Correct 604 ms 134072 KB Output is correct
59 Correct 2013 ms 177016 KB Output is correct
60 Correct 3546 ms 177260 KB Output is correct
61 Correct 1885 ms 177400 KB Output is correct
62 Correct 1605 ms 183032 KB Output is correct
63 Correct 3355 ms 181088 KB Output is correct
64 Correct 2166 ms 178288 KB Output is correct
65 Correct 1997 ms 177144 KB Output is correct
66 Correct 2224 ms 177460 KB Output is correct
67 Correct 2116 ms 181928 KB Output is correct
68 Correct 1745 ms 191884 KB Output is correct
69 Correct 3145 ms 201356 KB Output is correct