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답안 #1034820

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1034820 2024-07-25T19:10:28 Z RecursiveCo Fire (BOI24_fire) C++17
100 / 100
 416 ms 115552 KB 
// CF template, version 3.0

#include <bits/stdc++.h>

using namespace std;

#define improvePerformance ios_base::sync_with_stdio(false); cin.tie(0)
#define getTest int t; cin >> t
#define eachTest for (int _var=0;_var<t;_var++)
#define get(name) int (name); cin >> (name)
#define out(o) cout << (o)
#define getList(cnt, name) vector<int> (name); for (int _=0;_<(cnt);_++) { get(a); (name).push_back(a); }
#define sortl(name) sort((name).begin(), (name).end())
#define rev(name) reverse((name).begin(), (name).end())
#define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
#define decision(b) if (b){out("YES");}else{out("NO");}

#define int long long int

template <typename T, typename I>
struct segtree {
    int n;
    vector<T> tree;
    vector<I> initial;
    T id;

    segtree(int i_n, vector<I> i_initial, T i_id): n(i_n), initial(i_initial), id(i_id) {
        tree.resize(4 * n);
    }

    T conquer(T left, T right) {
        // write your conquer function
    }

    T value(I inp) {
        // write your value function
    }

    void build(int v, int l, int r) {
        if (l == r) tree[v] = value(initial[l]);
        else {
            int middle = (l + r) / 2;
            build(2 * v, l, middle);
            build(2 * v + 1, middle + 1, r);
            tree[v] = conquer(tree[2 * v], tree[2 * v + 1]);
        }
    }

    void upd(int v, int l, int r, int i, I x) {
        if (l == r) tree[v] = value(x);
        else {
            int middle = (l + r) / 2;
            if (middle >= i) upd(2 * v, l, middle, i, x);
            else upd(2 * v + 1, middle + 1, r, i, x);
            tree[v] = conquer(tree[2 * v], tree[2 * v + 1]);
        }
    }

    T query(int v, int l, int r, int ql, int qr) {
        if (ql <= l && r <= qr) return tree[v];
        else if (r < ql || qr < l) return id;
        int middle = (l + r) / 2;
        T left = query(2 * v, l, middle, ql, qr);
        T right = query(2 * v + 1, middle + 1, r, ql, qr);
        return conquer(left, right);
    }
};

// vector<int>

vector<vector<int>> lift;
vector<int> go;

int calc(int l, int r) {
    int d = l;
    int ret = 0;
    bool extra = go[r] == r;
    while (d < r) {
        if (go[d] == d) break;
        int i = 19;
        int p = 524288;
        while (i >= 0) {
            int dest = lift[d][i];
            if (dest <= r - extra) {
                d = dest;
                ret += p;
                break;
            }
            i--;
            p /= 2;
        }
        d = lift[d][0];
        ret++;
    }
    /*out(l);
    out(" ");
    out(r);
    out(" ");
    out(d);
    out(endl);*/
    if (d >= r) return ret;
    return 1e18;
}

signed main() {
    improvePerformance;
    //getTest;
    
    //eachTest {
        get(n);
        get(m);
        vector<pair<int, int>> ranges;
        vector<pair<int, int>> wraps;
        vector<int> vals;
        int r = 0;
        int w = 0;
        forto(n, i) {
            get(s);
            get(e);
            vals.push_back(s);
            vals.push_back(e);
            if (s < e) ranges.push_back({s, e}), r++;
            else wraps.push_back({e, s}), w++;
        }
        vals.push_back(0);
        vals.push_back(m - 1);
        map<int, int> coords;
        sortl(vals);
        int ind = 0;
        int s = vals.size();
        forto(s, i) {
            if (i == 0 || vals[i] != vals[i - 1]) coords[vals[i]] = ind++;
        }
        int N = ind;
        forto(r, i) {
            ranges[i].first = coords[ranges[i].first];
            ranges[i].second = coords[ranges[i].second];
        }
        forto(w, i) {
            wraps[i].first = coords[wraps[i].first];
            wraps[i].second = coords[wraps[i].second];
        }
        int maxwrap = 0;
        forto(w, i) maxwrap = max(maxwrap, wraps[i].first);
        int minwrap = N;
        forto(w, i) minwrap = min(minwrap, wraps[i].second);
        sortl(ranges);
        go.resize(N);
        int maxi = 0;
        int ptr = 0;
        forto(N, i) {
            while (ptr < r && ranges[ptr].first <= i) maxi = max(maxi, ranges[ptr++].second);
            maxi = max(maxi, i);
            go[i] = maxi;
        }
        lift.resize(N, vector<int>(20));
        for (int i = N - 1; i >= 0; i--) {
            lift[i][0] = go[i];
            forto(20, j) {
                if (j == 0) continue;
                lift[i][j] = lift[lift[i][j - 1]][j - 1];
            }
        }
        int ans = 1e18;
        int onlyrng = 0;
        ind = 0;
        while (ind < N && go[ind] != ind) onlyrng++, ind = go[ind];
        if (go[ind] != ind) ans = min(ans, onlyrng);
        sortl(wraps);
        rev(wraps);
        int indone = N;
        ptr = 0;
        for (int i = maxwrap; i >= 0; i--) {
            int two = calc(i, minwrap) + 2;
            while (ptr < w && wraps[ptr].first >= i) indone = min(indone, wraps[ptr++].second);
            int one = calc(i, indone) + 1;
            ans = min({ans, one, two});
        }
        if (ans == 1e18) out(-1);
        else out(ans);
    //}
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:10:23: warning: unnecessary parentheses in declaration of 'n' [-Wparentheses]
   10 | #define get(name) int (name); cin >> (name)
      |                       ^
Main.cpp:110:9: note: in expansion of macro 'get'
  110 |         get(n);
      |         ^~~
Main.cpp:10:23: warning: unnecessary parentheses in declaration of 'm' [-Wparentheses]
   10 | #define get(name) int (name); cin >> (name)
      |                       ^
Main.cpp:111:9: note: in expansion of macro 'get'
  111 |         get(m);
      |         ^~~
Main.cpp:15:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
Main.cpp:117:9: note: in expansion of macro 'forto'
  117 |         forto(n, i) {
      |         ^~~~~
Main.cpp:10:23: warning: unnecessary parentheses in declaration of 's' [-Wparentheses]
   10 | #define get(name) int (name); cin >> (name)
      |                       ^
Main.cpp:118:13: note: in expansion of macro 'get'
  118 |             get(s);
      |             ^~~
Main.cpp:10:23: warning: unnecessary parentheses in declaration of 'e' [-Wparentheses]
   10 | #define get(name) int (name); cin >> (name)
      |                       ^
Main.cpp:119:13: note: in expansion of macro 'get'
  119 |             get(e);
      |             ^~~
Main.cpp:15:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
Main.cpp:131:9: note: in expansion of macro 'forto'
  131 |         forto(s, i) {
      |         ^~~~~
Main.cpp:15:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
Main.cpp:135:9: note: in expansion of macro 'forto'
  135 |         forto(r, i) {
      |         ^~~~~
Main.cpp:15:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
Main.cpp:139:9: note: in expansion of macro 'forto'
  139 |         forto(w, i) {
      |         ^~~~~
Main.cpp:15:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
Main.cpp:144:9: note: in expansion of macro 'forto'
  144 |         forto(w, i) maxwrap = max(maxwrap, wraps[i].first);
      |         ^~~~~
Main.cpp:15:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
Main.cpp:146:9: note: in expansion of macro 'forto'
  146 |         forto(w, i) minwrap = min(minwrap, wraps[i].second);
      |         ^~~~~
Main.cpp:15:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
Main.cpp:151:9: note: in expansion of macro 'forto'
  151 |         forto(N, i) {
      |         ^~~~~
Main.cpp:15:35: warning: unnecessary parentheses in declaration of 'j' [-Wparentheses]
   15 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
Main.cpp:159:13: note: in expansion of macro 'forto'
  159 |             forto(20, j) {
      |             ^~~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 452 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 460 KB Output is correct
23 Correct 0 ms 344 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 452 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 460 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 0 ms 460 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 0 ms 604 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 604 KB Output is correct
36 Correct 1 ms 604 KB Output is correct
37 Correct 0 ms 604 KB Output is correct
38 Correct 0 ms 456 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 452 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 460 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 0 ms 460 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 0 ms 604 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 604 KB Output is correct
36 Correct 1 ms 604 KB Output is correct
37 Correct 0 ms 604 KB Output is correct
38 Correct 0 ms 456 KB Output is correct
39 Correct 6 ms 3420 KB Output is correct
40 Correct 6 ms 3420 KB Output is correct
41 Correct 6 ms 3164 KB Output is correct
42 Correct 5 ms 1880 KB Output is correct
43 Correct 3 ms 1620 KB Output is correct
44 Correct 4 ms 1884 KB Output is correct
45 Correct 4 ms 1884 KB Output is correct
46 Correct 4 ms 2116 KB Output is correct
47 Correct 6 ms 3420 KB Output is correct
48 Correct 7 ms 3164 KB Output is correct
49 Correct 4 ms 3164 KB Output is correct
50 Correct 4 ms 1976 KB Output is correct

Subtask #4
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 6 ms 3196 KB Output is correct
16 Correct 4 ms 1884 KB Output is correct
17 Correct 3 ms 1616 KB Output is correct
18 Correct 4 ms 1884 KB Output is correct
19 Correct 6 ms 3420 KB Output is correct
20 Correct 34 ms 9436 KB Output is correct
21 Correct 357 ms 115460 KB Output is correct
22 Correct 333 ms 115192 KB Output is correct
23 Correct 233 ms 61600 KB Output is correct
24 Correct 345 ms 115280 KB Output is correct
25 Correct 214 ms 50900 KB Output is correct
26 Correct 234 ms 62068 KB Output is correct
27 Correct 251 ms 62064 KB Output is correct
28 Correct 318 ms 112804 KB Output is correct

Subtask #5
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 3164 KB Output is correct
13 Correct 4 ms 1884 KB Output is correct
14 Correct 4 ms 1824 KB Output is correct
15 Correct 29 ms 9528 KB Output is correct
16 Correct 220 ms 61596 KB Output is correct
17 Correct 400 ms 115552 KB Output is correct
18 Correct 416 ms 115368 KB Output is correct
19 Correct 356 ms 115140 KB Output is correct
20 Correct 249 ms 61600 KB Output is correct

Subtask #6
26.0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 452 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 460 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 0 ms 460 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 0 ms 604 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 604 KB Output is correct
36 Correct 1 ms 604 KB Output is correct
37 Correct 0 ms 604 KB Output is correct
38 Correct 0 ms 456 KB Output is correct
39 Correct 6 ms 3420 KB Output is correct
40 Correct 6 ms 3420 KB Output is correct
41 Correct 6 ms 3164 KB Output is correct
42 Correct 5 ms 1880 KB Output is correct
43 Correct 3 ms 1620 KB Output is correct
44 Correct 4 ms 1884 KB Output is correct
45 Correct 4 ms 1884 KB Output is correct
46 Correct 4 ms 2116 KB Output is correct
47 Correct 6 ms 3420 KB Output is correct
48 Correct 7 ms 3164 KB Output is correct
49 Correct 4 ms 3164 KB Output is correct
50 Correct 4 ms 1976 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 1 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 604 KB Output is correct
61 Correct 1 ms 348 KB Output is correct
62 Correct 1 ms 348 KB Output is correct
63 Correct 1 ms 348 KB Output is correct
64 Correct 0 ms 604 KB Output is correct
65 Correct 6 ms 3196 KB Output is correct
66 Correct 4 ms 1884 KB Output is correct
67 Correct 3 ms 1616 KB Output is correct
68 Correct 4 ms 1884 KB Output is correct
69 Correct 6 ms 3420 KB Output is correct
70 Correct 34 ms 9436 KB Output is correct
71 Correct 357 ms 115460 KB Output is correct
72 Correct 333 ms 115192 KB Output is correct
73 Correct 233 ms 61600 KB Output is correct
74 Correct 345 ms 115280 KB Output is correct
75 Correct 214 ms 50900 KB Output is correct
76 Correct 234 ms 62068 KB Output is correct
77 Correct 251 ms 62064 KB Output is correct
78 Correct 318 ms 112804 KB Output is correct
79 Correct 0 ms 344 KB Output is correct
80 Correct 0 ms 348 KB Output is correct
81 Correct 0 ms 348 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 0 ms 348 KB Output is correct
86 Correct 1 ms 600 KB Output is correct
87 Correct 1 ms 348 KB Output is correct
88 Correct 0 ms 604 KB Output is correct
89 Correct 0 ms 348 KB Output is correct
90 Correct 6 ms 3164 KB Output is correct
91 Correct 4 ms 1884 KB Output is correct
92 Correct 4 ms 1824 KB Output is correct
93 Correct 29 ms 9528 KB Output is correct
94 Correct 220 ms 61596 KB Output is correct
95 Correct 400 ms 115552 KB Output is correct
96 Correct 416 ms 115368 KB Output is correct
97 Correct 356 ms 115140 KB Output is correct
98 Correct 249 ms 61600 KB Output is correct
99 Correct 341 ms 115272 KB Output is correct
100 Correct 349 ms 115280 KB Output is correct
101 Correct 371 ms 115440 KB Output is correct
102 Correct 372 ms 115320 KB Output is correct
103 Correct 260 ms 62236 KB Output is correct
104 Correct 328 ms 110124 KB Output is correct
105 Correct 234 ms 114972 KB Output is correct