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Submission #1050527

# Submission time Handle Problem Language Result Execution time Memory
1050527 2024-08-09T10:30:17 Z LucaIlie Fire (BOI24_fire) C++17
100 / 100
 1357 ms 356216 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 len = 1, 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 << l);
            }
        }
        if ( v[p].r < v[i].l + m ) {
            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 14796 KB Output is correct
4 Correct 2 ms 18780 KB Output is correct
5 Correct 1 ms 18780 KB Output is correct
6 Correct 2 ms 16732 KB Output is correct
7 Correct 1 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 3 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 26972 KB Output is correct
23 Correct 3 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 14796 KB Output is correct
4 Correct 2 ms 18780 KB Output is correct
5 Correct 1 ms 18780 KB Output is correct
6 Correct 2 ms 16732 KB Output is correct
7 Correct 1 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 3 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 26972 KB Output is correct
23 Correct 3 ms 26972 KB Output is correct
24 Correct 2 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 41520 KB Output is correct
28 Correct 4 ms 43608 KB Output is correct
29 Correct 4 ms 43608 KB Output is correct
30 Correct 3 ms 41308 KB Output is correct
31 Correct 3 ms 39260 KB Output is correct
32 Correct 3 ms 41308 KB Output is correct
33 Correct 4 ms 41304 KB Output is correct
34 Correct 3 ms 41308 KB Output is correct
35 Correct 4 ms 43612 KB Output is correct
36 Correct 4 ms 43612 KB Output is correct
37 Correct 3 ms 43612 KB Output is correct
38 Correct 3 ms 41308 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 14796 KB Output is correct
4 Correct 2 ms 18780 KB Output is correct
5 Correct 1 ms 18780 KB Output is correct
6 Correct 2 ms 16732 KB Output is correct
7 Correct 1 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 3 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 26972 KB Output is correct
23 Correct 3 ms 26972 KB Output is correct
24 Correct 2 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 41520 KB Output is correct
28 Correct 4 ms 43608 KB Output is correct
29 Correct 4 ms 43608 KB Output is correct
30 Correct 3 ms 41308 KB Output is correct
31 Correct 3 ms 39260 KB Output is correct
32 Correct 3 ms 41308 KB Output is correct
33 Correct 4 ms 41304 KB Output is correct
34 Correct 3 ms 41308 KB Output is correct
35 Correct 4 ms 43612 KB Output is correct
36 Correct 4 ms 43612 KB Output is correct
37 Correct 3 ms 43612 KB Output is correct
38 Correct 3 ms 41308 KB Output is correct
39 Correct 17 ms 65372 KB Output is correct
40 Correct 16 ms 65548 KB Output is correct
41 Correct 17 ms 65576 KB Output is correct
42 Correct 13 ms 62556 KB Output is correct
43 Correct 13 ms 60508 KB Output is correct
44 Correct 15 ms 62804 KB Output is correct
45 Correct 13 ms 62568 KB Output is correct
46 Correct 14 ms 62556 KB Output is correct
47 Correct 16 ms 65560 KB Output is correct
48 Correct 16 ms 65596 KB Output is correct
49 Correct 12 ms 65372 KB Output is correct
50 Correct 13 ms 62724 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 10588 KB Output is correct
2 Correct 1 ms 16984 KB Output is correct
3 Correct 2 ms 24924 KB Output is correct
4 Correct 2 ms 23000 KB Output is correct
5 Correct 2 ms 24924 KB Output is correct
6 Correct 2 ms 26968 KB Output is correct
7 Correct 2 ms 26972 KB Output is correct
8 Correct 2 ms 26972 KB Output is correct
9 Correct 3 ms 41308 KB Output is correct
10 Correct 4 ms 43608 KB Output is correct
11 Correct 4 ms 41308 KB Output is correct
12 Correct 4 ms 39260 KB Output is correct
13 Correct 4 ms 41308 KB Output is correct
14 Correct 4 ms 43612 KB Output is correct
15 Correct 16 ms 65552 KB Output is correct
16 Correct 14 ms 62556 KB Output is correct
17 Correct 12 ms 60504 KB Output is correct
18 Correct 13 ms 62744 KB Output is correct
19 Correct 16 ms 65564 KB Output is correct
20 Correct 62 ms 72276 KB Output is correct
21 Correct 1186 ms 352336 KB Output is correct
22 Correct 1205 ms 356176 KB Output is correct
23 Correct 787 ms 235536 KB Output is correct
24 Correct 1144 ms 356180 KB Output is correct
25 Correct 694 ms 213652 KB Output is correct
26 Correct 789 ms 236508 KB Output is correct
27 Correct 804 ms 236376 KB Output is correct
28 Correct 1126 ms 351424 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 10588 KB Output is correct
2 Correct 2 ms 16988 KB Output is correct
3 Correct 2 ms 20828 KB Output is correct
4 Correct 2 ms 24924 KB Output is correct
5 Correct 2 ms 26972 KB Output is correct
6 Correct 2 ms 26972 KB Output is correct
7 Correct 2 ms 26972 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 41308 KB Output is correct
12 Correct 17 ms 65372 KB Output is correct
13 Correct 13 ms 62552 KB Output is correct
14 Correct 13 ms 62556 KB Output is correct
15 Correct 61 ms 72296 KB Output is correct
16 Correct 772 ms 231756 KB Output is correct
17 Correct 1184 ms 356180 KB Output is correct
18 Correct 1173 ms 356080 KB Output is correct
19 Correct 1107 ms 356180 KB Output is correct
20 Correct 809 ms 233100 KB Output is correct

Subtask #6
26.0 / 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 14796 KB Output is correct
4 Correct 2 ms 18780 KB Output is correct
5 Correct 1 ms 18780 KB Output is correct
6 Correct 2 ms 16732 KB Output is correct
7 Correct 1 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 3 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 26972 KB Output is correct
23 Correct 3 ms 26972 KB Output is correct
24 Correct 2 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 41520 KB Output is correct
28 Correct 4 ms 43608 KB Output is correct
29 Correct 4 ms 43608 KB Output is correct
30 Correct 3 ms 41308 KB Output is correct
31 Correct 3 ms 39260 KB Output is correct
32 Correct 3 ms 41308 KB Output is correct
33 Correct 4 ms 41304 KB Output is correct
34 Correct 3 ms 41308 KB Output is correct
35 Correct 4 ms 43612 KB Output is correct
36 Correct 4 ms 43612 KB Output is correct
37 Correct 3 ms 43612 KB Output is correct
38 Correct 3 ms 41308 KB Output is correct
39 Correct 17 ms 65372 KB Output is correct
40 Correct 16 ms 65548 KB Output is correct
41 Correct 17 ms 65576 KB Output is correct
42 Correct 13 ms 62556 KB Output is correct
43 Correct 13 ms 60508 KB Output is correct
44 Correct 15 ms 62804 KB Output is correct
45 Correct 13 ms 62568 KB Output is correct
46 Correct 14 ms 62556 KB Output is correct
47 Correct 16 ms 65560 KB Output is correct
48 Correct 16 ms 65596 KB Output is correct
49 Correct 12 ms 65372 KB Output is correct
50 Correct 13 ms 62724 KB Output is correct
51 Correct 1 ms 10588 KB Output is correct
52 Correct 1 ms 16984 KB Output is correct
53 Correct 2 ms 24924 KB Output is correct
54 Correct 2 ms 23000 KB Output is correct
55 Correct 2 ms 24924 KB Output is correct
56 Correct 2 ms 26968 KB Output is correct
57 Correct 2 ms 26972 KB Output is correct
58 Correct 2 ms 26972 KB Output is correct
59 Correct 3 ms 41308 KB Output is correct
60 Correct 4 ms 43608 KB Output is correct
61 Correct 4 ms 41308 KB Output is correct
62 Correct 4 ms 39260 KB Output is correct
63 Correct 4 ms 41308 KB Output is correct
64 Correct 4 ms 43612 KB Output is correct
65 Correct 16 ms 65552 KB Output is correct
66 Correct 14 ms 62556 KB Output is correct
67 Correct 12 ms 60504 KB Output is correct
68 Correct 13 ms 62744 KB Output is correct
69 Correct 16 ms 65564 KB Output is correct
70 Correct 62 ms 72276 KB Output is correct
71 Correct 1186 ms 352336 KB Output is correct
72 Correct 1205 ms 356176 KB Output is correct
73 Correct 787 ms 235536 KB Output is correct
74 Correct 1144 ms 356180 KB Output is correct
75 Correct 694 ms 213652 KB Output is correct
76 Correct 789 ms 236508 KB Output is correct
77 Correct 804 ms 236376 KB Output is correct
78 Correct 1126 ms 351424 KB Output is correct
79 Correct 1 ms 10588 KB Output is correct
80 Correct 2 ms 16988 KB Output is correct
81 Correct 2 ms 20828 KB Output is correct
82 Correct 2 ms 24924 KB Output is correct
83 Correct 2 ms 26972 KB Output is correct
84 Correct 2 ms 26972 KB Output is correct
85 Correct 2 ms 26972 KB Output is correct
86 Correct 4 ms 43612 KB Output is correct
87 Correct 3 ms 41308 KB Output is correct
88 Correct 4 ms 43612 KB Output is correct
89 Correct 3 ms 41308 KB Output is correct
90 Correct 17 ms 65372 KB Output is correct
91 Correct 13 ms 62552 KB Output is correct
92 Correct 13 ms 62556 KB Output is correct
93 Correct 61 ms 72296 KB Output is correct
94 Correct 772 ms 231756 KB Output is correct
95 Correct 1184 ms 356180 KB Output is correct
96 Correct 1173 ms 356080 KB Output is correct
97 Correct 1107 ms 356180 KB Output is correct
98 Correct 809 ms 233100 KB Output is correct
99 Correct 1184 ms 356176 KB Output is correct
100 Correct 1357 ms 356216 KB Output is correct
101 Correct 1217 ms 356176 KB Output is correct
102 Correct 1225 ms 356184 KB Output is correct
103 Correct 908 ms 234064 KB Output is correct
104 Correct 1268 ms 346772 KB Output is correct
105 Correct 517 ms 354900 KB Output is correct