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답안 #1028213

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1028213 2024-07-19T15:19:05 Z Issa Fire (BOI24_fire) C++17
100 / 100
 96 ms 44852 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define ent "\n"

const int maxn = 1e6 + 100;
const ll INF = (ll)1e18 + 100;
const int inf = 1e9 + 100;
const int MOD = 1e9 + 7;
const int maxl = 20;
const int P = 31;

int n, m;
pii a[maxn];
int p[maxl][maxn];

void test(){
	cin >> n >> m;
	vector<pii> v;
	for(int i = 1; i <= n; i++){
		cin >> a[i].first >> a[i].second;
		if(a[i].second < a[i].first) a[i].second += m;
	}
	sort(a + 1, a + n + 1);
	for(int i = 1; i <= n; i++){
		v.push_back({a[i].second, i});
	}
	sort(v.begin(), v.end());
	int j = 0, mx = 0;
	for(auto [x, i]: v){
		while(j < n && a[j+1].first <= x){
			j++; if(!mx || a[mx].second < a[j].second) mx = j;
		}
		p[0][i] = mx;
	}
	for(int k = 1; k < maxl; k++){
		for(int i = 1; i <= n; i++){
			p[k][i] = p[k-1][p[k-1][i]];
		}
	}
	int ans = inf;
	for(int i = 1; i <= n; i++){
		int j = i, cnt = 0;
		for(int k = maxl - 1; k >= 0; k--){
			if(a[p[k][j]].second - a[i].first < m){
				j = p[k][j]; cnt += (1<<k);
			}
		}
		j = p[0][j]; cnt++;
		if(a[j].second - a[i].first >= m){
			ans = min(ans, cnt + 1);
		}
	}
	if(ans == inf) ans = -1;
	cout << ans;
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int t; t = 1;
    while(t--) test();
    cout << ent;
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 24920 KB Output is correct
2 Correct 2 ms 24924 KB Output is correct
3 Correct 2 ms 24924 KB Output is correct
4 Correct 2 ms 25040 KB Output is correct
5 Correct 2 ms 24924 KB Output is correct
6 Correct 2 ms 24924 KB Output is correct
7 Correct 2 ms 25040 KB Output is correct
8 Correct 3 ms 29020 KB Output is correct
9 Correct 3 ms 29140 KB Output is correct
10 Correct 3 ms 31068 KB Output is correct
11 Correct 3 ms 29176 KB Output is correct
12 Correct 3 ms 29020 KB Output is correct
13 Correct 3 ms 31068 KB Output is correct
14 Correct 3 ms 29020 KB Output is correct
15 Correct 2 ms 29020 KB Output is correct
16 Correct 3 ms 29020 KB Output is correct
17 Correct 3 ms 29020 KB Output is correct
18 Correct 2 ms 29020 KB Output is correct
19 Correct 2 ms 29020 KB Output is correct
20 Correct 2 ms 29020 KB Output is correct
21 Correct 4 ms 31064 KB Output is correct
22 Correct 3 ms 29020 KB Output is correct
23 Correct 3 ms 31068 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 24920 KB Output is correct
2 Correct 2 ms 24924 KB Output is correct
3 Correct 2 ms 24924 KB Output is correct
4 Correct 2 ms 25040 KB Output is correct
5 Correct 2 ms 24924 KB Output is correct
6 Correct 2 ms 24924 KB Output is correct
7 Correct 2 ms 25040 KB Output is correct
8 Correct 3 ms 29020 KB Output is correct
9 Correct 3 ms 29140 KB Output is correct
10 Correct 3 ms 31068 KB Output is correct
11 Correct 3 ms 29176 KB Output is correct
12 Correct 3 ms 29020 KB Output is correct
13 Correct 3 ms 31068 KB Output is correct
14 Correct 3 ms 29020 KB Output is correct
15 Correct 2 ms 29020 KB Output is correct
16 Correct 3 ms 29020 KB Output is correct
17 Correct 3 ms 29020 KB Output is correct
18 Correct 2 ms 29020 KB Output is correct
19 Correct 2 ms 29020 KB Output is correct
20 Correct 2 ms 29020 KB Output is correct
21 Correct 4 ms 31064 KB Output is correct
22 Correct 3 ms 29020 KB Output is correct
23 Correct 3 ms 31068 KB Output is correct
24 Correct 3 ms 29020 KB Output is correct
25 Correct 3 ms 31068 KB Output is correct
26 Correct 3 ms 29276 KB Output is correct
27 Correct 3 ms 29020 KB Output is correct
28 Correct 3 ms 29020 KB Output is correct
29 Correct 3 ms 29020 KB Output is correct
30 Correct 3 ms 29020 KB Output is correct
31 Correct 2 ms 21084 KB Output is correct
32 Correct 3 ms 29020 KB Output is correct
33 Correct 3 ms 29020 KB Output is correct
34 Correct 3 ms 29020 KB Output is correct
35 Correct 3 ms 29020 KB Output is correct
36 Correct 3 ms 29020 KB Output is correct
37 Correct 3 ms 31068 KB Output is correct
38 Correct 3 ms 29196 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 24920 KB Output is correct
2 Correct 2 ms 24924 KB Output is correct
3 Correct 2 ms 24924 KB Output is correct
4 Correct 2 ms 25040 KB Output is correct
5 Correct 2 ms 24924 KB Output is correct
6 Correct 2 ms 24924 KB Output is correct
7 Correct 2 ms 25040 KB Output is correct
8 Correct 3 ms 29020 KB Output is correct
9 Correct 3 ms 29140 KB Output is correct
10 Correct 3 ms 31068 KB Output is correct
11 Correct 3 ms 29176 KB Output is correct
12 Correct 3 ms 29020 KB Output is correct
13 Correct 3 ms 31068 KB Output is correct
14 Correct 3 ms 29020 KB Output is correct
15 Correct 2 ms 29020 KB Output is correct
16 Correct 3 ms 29020 KB Output is correct
17 Correct 3 ms 29020 KB Output is correct
18 Correct 2 ms 29020 KB Output is correct
19 Correct 2 ms 29020 KB Output is correct
20 Correct 2 ms 29020 KB Output is correct
21 Correct 4 ms 31064 KB Output is correct
22 Correct 3 ms 29020 KB Output is correct
23 Correct 3 ms 31068 KB Output is correct
24 Correct 3 ms 29020 KB Output is correct
25 Correct 3 ms 31068 KB Output is correct
26 Correct 3 ms 29276 KB Output is correct
27 Correct 3 ms 29020 KB Output is correct
28 Correct 3 ms 29020 KB Output is correct
29 Correct 3 ms 29020 KB Output is correct
30 Correct 3 ms 29020 KB Output is correct
31 Correct 2 ms 21084 KB Output is correct
32 Correct 3 ms 29020 KB Output is correct
33 Correct 3 ms 29020 KB Output is correct
34 Correct 3 ms 29020 KB Output is correct
35 Correct 3 ms 29020 KB Output is correct
36 Correct 3 ms 29020 KB Output is correct
37 Correct 3 ms 31068 KB Output is correct
38 Correct 3 ms 29196 KB Output is correct
39 Correct 4 ms 31576 KB Output is correct
40 Correct 4 ms 29532 KB Output is correct
41 Correct 4 ms 29532 KB Output is correct
42 Correct 4 ms 29532 KB Output is correct
43 Correct 5 ms 29532 KB Output is correct
44 Correct 4 ms 29532 KB Output is correct
45 Correct 4 ms 29532 KB Output is correct
46 Correct 5 ms 29532 KB Output is correct
47 Correct 4 ms 29404 KB Output is correct
48 Correct 4 ms 29532 KB Output is correct
49 Correct 4 ms 29532 KB Output is correct
50 Correct 4 ms 31324 KB Output is correct

Subtask #4
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 29016 KB Output is correct
2 Correct 3 ms 29020 KB Output is correct
3 Correct 3 ms 29016 KB Output is correct
4 Correct 3 ms 29020 KB Output is correct
5 Correct 3 ms 29020 KB Output is correct
6 Correct 3 ms 29020 KB Output is correct
7 Correct 3 ms 29020 KB Output is correct
8 Correct 3 ms 29016 KB Output is correct
9 Correct 3 ms 29020 KB Output is correct
10 Correct 3 ms 29020 KB Output is correct
11 Correct 3 ms 29020 KB Output is correct
12 Correct 3 ms 29020 KB Output is correct
13 Correct 3 ms 29184 KB Output is correct
14 Correct 3 ms 29020 KB Output is correct
15 Correct 4 ms 29532 KB Output is correct
16 Correct 4 ms 29532 KB Output is correct
17 Correct 4 ms 29532 KB Output is correct
18 Correct 4 ms 29356 KB Output is correct
19 Correct 4 ms 29532 KB Output is correct
20 Correct 39 ms 39708 KB Output is correct
21 Correct 68 ms 42692 KB Output is correct
22 Correct 65 ms 44852 KB Output is correct
23 Correct 58 ms 41652 KB Output is correct
24 Correct 64 ms 44620 KB Output is correct
25 Correct 67 ms 41972 KB Output is correct
26 Correct 61 ms 42696 KB Output is correct
27 Correct 59 ms 42832 KB Output is correct
28 Correct 61 ms 42696 KB Output is correct

Subtask #5
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 29016 KB Output is correct
2 Correct 3 ms 29020 KB Output is correct
3 Correct 3 ms 29136 KB Output is correct
4 Correct 3 ms 29020 KB Output is correct
5 Correct 3 ms 29020 KB Output is correct
6 Correct 3 ms 29020 KB Output is correct
7 Correct 3 ms 29160 KB Output is correct
8 Correct 3 ms 29272 KB Output is correct
9 Correct 3 ms 29016 KB Output is correct
10 Correct 3 ms 29020 KB Output is correct
11 Correct 3 ms 29020 KB Output is correct
12 Correct 4 ms 29500 KB Output is correct
13 Correct 4 ms 29532 KB Output is correct
14 Correct 4 ms 29348 KB Output is correct
15 Correct 38 ms 39508 KB Output is correct
16 Correct 56 ms 41672 KB Output is correct
17 Correct 60 ms 41384 KB Output is correct
18 Correct 63 ms 42680 KB Output is correct
19 Correct 63 ms 37580 KB Output is correct
20 Correct 58 ms 36664 KB Output is correct

Subtask #6
26.0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 24920 KB Output is correct
2 Correct 2 ms 24924 KB Output is correct
3 Correct 2 ms 24924 KB Output is correct
4 Correct 2 ms 25040 KB Output is correct
5 Correct 2 ms 24924 KB Output is correct
6 Correct 2 ms 24924 KB Output is correct
7 Correct 2 ms 25040 KB Output is correct
8 Correct 3 ms 29020 KB Output is correct
9 Correct 3 ms 29140 KB Output is correct
10 Correct 3 ms 31068 KB Output is correct
11 Correct 3 ms 29176 KB Output is correct
12 Correct 3 ms 29020 KB Output is correct
13 Correct 3 ms 31068 KB Output is correct
14 Correct 3 ms 29020 KB Output is correct
15 Correct 2 ms 29020 KB Output is correct
16 Correct 3 ms 29020 KB Output is correct
17 Correct 3 ms 29020 KB Output is correct
18 Correct 2 ms 29020 KB Output is correct
19 Correct 2 ms 29020 KB Output is correct
20 Correct 2 ms 29020 KB Output is correct
21 Correct 4 ms 31064 KB Output is correct
22 Correct 3 ms 29020 KB Output is correct
23 Correct 3 ms 31068 KB Output is correct
24 Correct 3 ms 29020 KB Output is correct
25 Correct 3 ms 31068 KB Output is correct
26 Correct 3 ms 29276 KB Output is correct
27 Correct 3 ms 29020 KB Output is correct
28 Correct 3 ms 29020 KB Output is correct
29 Correct 3 ms 29020 KB Output is correct
30 Correct 3 ms 29020 KB Output is correct
31 Correct 2 ms 21084 KB Output is correct
32 Correct 3 ms 29020 KB Output is correct
33 Correct 3 ms 29020 KB Output is correct
34 Correct 3 ms 29020 KB Output is correct
35 Correct 3 ms 29020 KB Output is correct
36 Correct 3 ms 29020 KB Output is correct
37 Correct 3 ms 31068 KB Output is correct
38 Correct 3 ms 29196 KB Output is correct
39 Correct 4 ms 31576 KB Output is correct
40 Correct 4 ms 29532 KB Output is correct
41 Correct 4 ms 29532 KB Output is correct
42 Correct 4 ms 29532 KB Output is correct
43 Correct 5 ms 29532 KB Output is correct
44 Correct 4 ms 29532 KB Output is correct
45 Correct 4 ms 29532 KB Output is correct
46 Correct 5 ms 29532 KB Output is correct
47 Correct 4 ms 29404 KB Output is correct
48 Correct 4 ms 29532 KB Output is correct
49 Correct 4 ms 29532 KB Output is correct
50 Correct 4 ms 31324 KB Output is correct
51 Correct 3 ms 29016 KB Output is correct
52 Correct 3 ms 29020 KB Output is correct
53 Correct 3 ms 29016 KB Output is correct
54 Correct 3 ms 29020 KB Output is correct
55 Correct 3 ms 29020 KB Output is correct
56 Correct 3 ms 29020 KB Output is correct
57 Correct 3 ms 29020 KB Output is correct
58 Correct 3 ms 29016 KB Output is correct
59 Correct 3 ms 29020 KB Output is correct
60 Correct 3 ms 29020 KB Output is correct
61 Correct 3 ms 29020 KB Output is correct
62 Correct 3 ms 29020 KB Output is correct
63 Correct 3 ms 29184 KB Output is correct
64 Correct 3 ms 29020 KB Output is correct
65 Correct 4 ms 29532 KB Output is correct
66 Correct 4 ms 29532 KB Output is correct
67 Correct 4 ms 29532 KB Output is correct
68 Correct 4 ms 29356 KB Output is correct
69 Correct 4 ms 29532 KB Output is correct
70 Correct 39 ms 39708 KB Output is correct
71 Correct 68 ms 42692 KB Output is correct
72 Correct 65 ms 44852 KB Output is correct
73 Correct 58 ms 41652 KB Output is correct
74 Correct 64 ms 44620 KB Output is correct
75 Correct 67 ms 41972 KB Output is correct
76 Correct 61 ms 42696 KB Output is correct
77 Correct 59 ms 42832 KB Output is correct
78 Correct 61 ms 42696 KB Output is correct
79 Correct 3 ms 29016 KB Output is correct
80 Correct 3 ms 29020 KB Output is correct
81 Correct 3 ms 29136 KB Output is correct
82 Correct 3 ms 29020 KB Output is correct
83 Correct 3 ms 29020 KB Output is correct
84 Correct 3 ms 29020 KB Output is correct
85 Correct 3 ms 29160 KB Output is correct
86 Correct 3 ms 29272 KB Output is correct
87 Correct 3 ms 29016 KB Output is correct
88 Correct 3 ms 29020 KB Output is correct
89 Correct 3 ms 29020 KB Output is correct
90 Correct 4 ms 29500 KB Output is correct
91 Correct 4 ms 29532 KB Output is correct
92 Correct 4 ms 29348 KB Output is correct
93 Correct 38 ms 39508 KB Output is correct
94 Correct 56 ms 41672 KB Output is correct
95 Correct 60 ms 41384 KB Output is correct
96 Correct 63 ms 42680 KB Output is correct
97 Correct 63 ms 37580 KB Output is correct
98 Correct 58 ms 36664 KB Output is correct
99 Correct 96 ms 37552 KB Output is correct
100 Correct 68 ms 38984 KB Output is correct
101 Correct 60 ms 36808 KB Output is correct
102 Correct 91 ms 37576 KB Output is correct
103 Correct 59 ms 37716 KB Output is correct
104 Correct 65 ms 37676 KB Output is correct
105 Correct 45 ms 41396 KB Output is correct