oj.uz

Submission #1050518

# Submission time Handle Problem Language Result Execution time Memory
1050518 2024-08-09T10:25:44 Z LucaIlie Fire (BOI24_fire) C++17
40 / 100
 2000 ms 356180 KB 
#include <bits/stdc++.h>

#define int long long

using namespace std;

struct interval {
    int l, r;
};

struct maxpos {
    int max, pos;

    bool operator < ( const maxpos &x ) const {
        return max < x.max;
    }
};

const int MAX_N = 2e5;
const int MAX_VAL = 4 * MAX_N;
const int MAX_LOG_N = 17;
const int MAX_LOG_VAL = MAX_LOG_N + 2;
int nxt[MAX_LOG_N + 2][2 * MAX_N];
interval v[2 * MAX_N];
maxpos maxR[MAX_LOG_VAL + 1][MAX_VAL];
map<int, int> normal;

signed main() {
    int n, m;

    cin >> n >> m;
    for ( int i = 0; i < n; i++ ) {
        int l, r;
        cin >> l >> r;
        if ( l > r )
            r += m;
        v[i] = { l, r };
        v[i + n] = { l + m, r + m };
        normal[l] = 0;
        normal[l + m] = 0;
        normal[r] = 0;
        normal[r + m] = 0;
    }
    n *= 2;

    int val = 0;
    for ( auto x: normal )
        normal[x.first] = val++;

    //for ( int i = 0; i < n; i++ )
      //  printf( "%d %d\n", v[i].l, v[i].r );

    for ( int i = 0; i < n; i++ )
        maxR[0][normal[v[i].l]] = max( maxR[0][normal[v[i].l]], { v[i].r, i } );
    for ( int l = 1; (1 << l) <= val; l++ ) {
        for ( int i = 0; i <= val - (1 << l); i++ )
            maxR[l][i] = max( maxR[l - 1][i], maxR[l - 1][i + (1 << (l - 1))] );
    }

    for ( int i = 0; i < n; i++ ) {
        int l = log2( normal[v[i].r] - normal[v[i].l] );
        nxt[0][i] = max( maxR[l][normal[v[i].l]], maxR[l][normal[v[i].r] - (1 << l) + 1] ).pos;
    }
    for ( int l = 1; (1 << l) <= n; l++ ) {
        for ( int i = 0; i < n; i++ )
            nxt[l][i] = nxt[l - 1][nxt[l - 1][i]];
    }

    int minLen = n + 1;
    for ( int i = 0; i < n; i++ ) {
        int p = i, len = 1;
        while ( v[p].r < v[i].l + m && p != nxt[0][p] ) {
            p = nxt[0][p];
            len++;
        }
        if ( v[p].r >= v[i].l + m )
            minLen = min( minLen, len );
    }
    /*for ( int i = 0; i < n; i++ ) {
        int len = 0, p = i;
        for ( int l = log2( n ); l >= 0; l-- ) {
            if ( v[nxt[l][p]].r < v[i].l + m ) {
                p = nxt[l][p];
                len += (1 << p);
            }
        }
        p = nxt[0][p];
        len++;

        if ( v[p].r >= v[i].l + m )
            minLen = min( minLen, len );
    }*/

    cout << (minLen == n + 1 ? -1 : minLen);

    return 0;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16732 KB Output is correct
2 Correct 1 ms 10588 KB Output is correct
3 Correct 1 ms 14684 KB Output is correct
4 Correct 1 ms 18780 KB Output is correct
5 Correct 1 ms 18780 KB Output is correct
6 Correct 1 ms 16732 KB Output is correct
7 Correct 2 ms 20828 KB Output is correct
8 Correct 2 ms 26972 KB Output is correct
9 Correct 2 ms 24924 KB Output is correct
10 Correct 2 ms 26972 KB Output is correct
11 Correct 2 ms 26972 KB Output is correct
12 Correct 2 ms 24924 KB Output is correct
13 Correct 2 ms 24924 KB Output is correct
14 Correct 2 ms 26972 KB Output is correct
15 Correct 2 ms 22876 KB Output is correct
16 Correct 2 ms 24924 KB Output is correct
17 Correct 2 ms 26972 KB Output is correct
18 Correct 2 ms 26972 KB Output is correct
19 Correct 2 ms 26972 KB Output is correct
20 Correct 2 ms 24924 KB Output is correct
21 Correct 2 ms 26972 KB Output is correct
22 Correct 2 ms 26968 KB Output is correct
23 Correct 2 ms 26972 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16732 KB Output is correct
2 Correct 1 ms 10588 KB Output is correct
3 Correct 1 ms 14684 KB Output is correct
4 Correct 1 ms 18780 KB Output is correct
5 Correct 1 ms 18780 KB Output is correct
6 Correct 1 ms 16732 KB Output is correct
7 Correct 2 ms 20828 KB Output is correct
8 Correct 2 ms 26972 KB Output is correct
9 Correct 2 ms 24924 KB Output is correct
10 Correct 2 ms 26972 KB Output is correct
11 Correct 2 ms 26972 KB Output is correct
12 Correct 2 ms 24924 KB Output is correct
13 Correct 2 ms 24924 KB Output is correct
14 Correct 2 ms 26972 KB Output is correct
15 Correct 2 ms 22876 KB Output is correct
16 Correct 2 ms 24924 KB Output is correct
17 Correct 2 ms 26972 KB Output is correct
18 Correct 2 ms 26972 KB Output is correct
19 Correct 2 ms 26972 KB Output is correct
20 Correct 2 ms 24924 KB Output is correct
21 Correct 2 ms 26972 KB Output is correct
22 Correct 2 ms 26968 KB Output is correct
23 Correct 2 ms 26972 KB Output is correct
24 Correct 3 ms 31068 KB Output is correct
25 Correct 4 ms 43612 KB Output is correct
26 Correct 4 ms 43612 KB Output is correct
27 Correct 4 ms 41524 KB Output is correct
28 Correct 4 ms 43560 KB Output is correct
29 Correct 4 ms 43612 KB Output is correct
30 Correct 3 ms 41308 KB Output is correct
31 Correct 3 ms 39404 KB Output is correct
32 Correct 4 ms 41536 KB Output is correct
33 Correct 4 ms 41308 KB Output is correct
34 Correct 4 ms 41408 KB Output is correct
35 Correct 4 ms 39516 KB Output is correct
36 Correct 3 ms 41408 KB Output is correct
37 Correct 3 ms 41564 KB Output is correct
38 Correct 3 ms 41304 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16732 KB Output is correct
2 Correct 1 ms 10588 KB Output is correct
3 Correct 1 ms 14684 KB Output is correct
4 Correct 1 ms 18780 KB Output is correct
5 Correct 1 ms 18780 KB Output is correct
6 Correct 1 ms 16732 KB Output is correct
7 Correct 2 ms 20828 KB Output is correct
8 Correct 2 ms 26972 KB Output is correct
9 Correct 2 ms 24924 KB Output is correct
10 Correct 2 ms 26972 KB Output is correct
11 Correct 2 ms 26972 KB Output is correct
12 Correct 2 ms 24924 KB Output is correct
13 Correct 2 ms 24924 KB Output is correct
14 Correct 2 ms 26972 KB Output is correct
15 Correct 2 ms 22876 KB Output is correct
16 Correct 2 ms 24924 KB Output is correct
17 Correct 2 ms 26972 KB Output is correct
18 Correct 2 ms 26972 KB Output is correct
19 Correct 2 ms 26972 KB Output is correct
20 Correct 2 ms 24924 KB Output is correct
21 Correct 2 ms 26972 KB Output is correct
22 Correct 2 ms 26968 KB Output is correct
23 Correct 2 ms 26972 KB Output is correct
24 Correct 3 ms 31068 KB Output is correct
25 Correct 4 ms 43612 KB Output is correct
26 Correct 4 ms 43612 KB Output is correct
27 Correct 4 ms 41524 KB Output is correct
28 Correct 4 ms 43560 KB Output is correct
29 Correct 4 ms 43612 KB Output is correct
30 Correct 3 ms 41308 KB Output is correct
31 Correct 3 ms 39404 KB Output is correct
32 Correct 4 ms 41536 KB Output is correct
33 Correct 4 ms 41308 KB Output is correct
34 Correct 4 ms 41408 KB Output is correct
35 Correct 4 ms 39516 KB Output is correct
36 Correct 3 ms 41408 KB Output is correct
37 Correct 3 ms 41564 KB Output is correct
38 Correct 3 ms 41304 KB Output is correct
39 Correct 17 ms 49756 KB Output is correct
40 Correct 92 ms 47964 KB Output is correct
41 Correct 17 ms 47964 KB Output is correct
42 Correct 118 ms 46940 KB Output is correct
43 Correct 12 ms 44888 KB Output is correct
44 Correct 118 ms 45156 KB Output is correct
45 Correct 119 ms 47132 KB Output is correct
46 Correct 117 ms 47140 KB Output is correct
47 Correct 15 ms 49756 KB Output is correct
48 Correct 15 ms 45964 KB Output is correct
49 Correct 25 ms 45916 KB Output is correct
50 Correct 32 ms 46940 KB Output is correct

Subtask #4
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 10584 KB Output is correct
2 Correct 2 ms 16732 KB Output is correct
3 Correct 2 ms 24924 KB Output is correct
4 Correct 2 ms 22876 KB Output is correct
5 Correct 2 ms 24924 KB Output is correct
6 Correct 2 ms 26972 KB Output is correct
7 Correct 2 ms 26972 KB Output is correct
8 Correct 2 ms 26972 KB Output is correct
9 Correct 4 ms 41308 KB Output is correct
10 Correct 4 ms 43612 KB Output is correct
11 Correct 3 ms 41308 KB Output is correct
12 Correct 3 ms 39472 KB Output is correct
13 Correct 3 ms 41308 KB Output is correct
14 Correct 4 ms 43612 KB Output is correct
15 Correct 17 ms 53848 KB Output is correct
16 Correct 119 ms 52988 KB Output is correct
17 Correct 12 ms 52568 KB Output is correct
18 Correct 121 ms 52828 KB Output is correct
19 Correct 15 ms 53848 KB Output is correct
20 Correct 55 ms 73040 KB Output is correct
21 Execution timed out 2059 ms 356180 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 10584 KB Output is correct
2 Correct 1 ms 16732 KB Output is correct
3 Correct 2 ms 20828 KB Output is correct
4 Correct 2 ms 24924 KB Output is correct
5 Correct 3 ms 26968 KB Output is correct
6 Correct 2 ms 26972 KB Output is correct
7 Correct 3 ms 26968 KB Output is correct
8 Correct 4 ms 43612 KB Output is correct
9 Correct 3 ms 41308 KB Output is correct
10 Correct 4 ms 43612 KB Output is correct
11 Correct 3 ms 41404 KB Output is correct
12 Correct 16 ms 49756 KB Output is correct
13 Correct 117 ms 51028 KB Output is correct
14 Correct 28 ms 48988 KB Output is correct
15 Correct 55 ms 72912 KB Output is correct
16 Execution timed out 2037 ms 215632 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16732 KB Output is correct
2 Correct 1 ms 10588 KB Output is correct
3 Correct 1 ms 14684 KB Output is correct
4 Correct 1 ms 18780 KB Output is correct
5 Correct 1 ms 18780 KB Output is correct
6 Correct 1 ms 16732 KB Output is correct
7 Correct 2 ms 20828 KB Output is correct
8 Correct 2 ms 26972 KB Output is correct
9 Correct 2 ms 24924 KB Output is correct
10 Correct 2 ms 26972 KB Output is correct
11 Correct 2 ms 26972 KB Output is correct
12 Correct 2 ms 24924 KB Output is correct
13 Correct 2 ms 24924 KB Output is correct
14 Correct 2 ms 26972 KB Output is correct
15 Correct 2 ms 22876 KB Output is correct
16 Correct 2 ms 24924 KB Output is correct
17 Correct 2 ms 26972 KB Output is correct
18 Correct 2 ms 26972 KB Output is correct
19 Correct 2 ms 26972 KB Output is correct
20 Correct 2 ms 24924 KB Output is correct
21 Correct 2 ms 26972 KB Output is correct
22 Correct 2 ms 26968 KB Output is correct
23 Correct 2 ms 26972 KB Output is correct
24 Correct 3 ms 31068 KB Output is correct
25 Correct 4 ms 43612 KB Output is correct
26 Correct 4 ms 43612 KB Output is correct
27 Correct 4 ms 41524 KB Output is correct
28 Correct 4 ms 43560 KB Output is correct
29 Correct 4 ms 43612 KB Output is correct
30 Correct 3 ms 41308 KB Output is correct
31 Correct 3 ms 39404 KB Output is correct
32 Correct 4 ms 41536 KB Output is correct
33 Correct 4 ms 41308 KB Output is correct
34 Correct 4 ms 41408 KB Output is correct
35 Correct 4 ms 39516 KB Output is correct
36 Correct 3 ms 41408 KB Output is correct
37 Correct 3 ms 41564 KB Output is correct
38 Correct 3 ms 41304 KB Output is correct
39 Correct 17 ms 49756 KB Output is correct
40 Correct 92 ms 47964 KB Output is correct
41 Correct 17 ms 47964 KB Output is correct
42 Correct 118 ms 46940 KB Output is correct
43 Correct 12 ms 44888 KB Output is correct
44 Correct 118 ms 45156 KB Output is correct
45 Correct 119 ms 47132 KB Output is correct
46 Correct 117 ms 47140 KB Output is correct
47 Correct 15 ms 49756 KB Output is correct
48 Correct 15 ms 45964 KB Output is correct
49 Correct 25 ms 45916 KB Output is correct
50 Correct 32 ms 46940 KB Output is correct
51 Correct 1 ms 10584 KB Output is correct
52 Correct 2 ms 16732 KB Output is correct
53 Correct 2 ms 24924 KB Output is correct
54 Correct 2 ms 22876 KB Output is correct
55 Correct 2 ms 24924 KB Output is correct
56 Correct 2 ms 26972 KB Output is correct
57 Correct 2 ms 26972 KB Output is correct
58 Correct 2 ms 26972 KB Output is correct
59 Correct 4 ms 41308 KB Output is correct
60 Correct 4 ms 43612 KB Output is correct
61 Correct 3 ms 41308 KB Output is correct
62 Correct 3 ms 39472 KB Output is correct
63 Correct 3 ms 41308 KB Output is correct
64 Correct 4 ms 43612 KB Output is correct
65 Correct 17 ms 53848 KB Output is correct
66 Correct 119 ms 52988 KB Output is correct
67 Correct 12 ms 52568 KB Output is correct
68 Correct 121 ms 52828 KB Output is correct
69 Correct 15 ms 53848 KB Output is correct
70 Correct 55 ms 73040 KB Output is correct
71 Execution timed out 2059 ms 356180 KB Time limit exceeded
72 Halted 0 ms 0 KB -