oj.uz

Submission #1019905

# Submission time Handle Problem Language Result Execution time Memory
1019905 2024-07-11T10:30:02 Z beaconmc Fire (BOI24_fire) C++14
100 / 100
 1145 ms 189240 KB 
#include <bits/stdc++.h>


typedef long long ll;
#define FOR(i,x,y) for(ll i=x; i<y; i++)
#define FORNEG(i,x,y) for(ll i=x; i>y; i--)

using namespace std;

vector<vector<ll>> normal;
map<ll, ll> maxis;
map<ll,ll> par;

ll anc[500005][30];


ll ancc(ll x, ll k){
	if (x==1000000000) return 1000000000;
	if (anc[x][k] != -1) return anc[x][k];
	if (k==0){
		if (par[x] == x) return anc[x][k] = 1000000000;
		return anc[x][k] = par[x];
	}
	return anc[x][k] = ancc(ancc(x, k-1), k-1);
}

int main(){
	FOR(i,0,500005) FOR(j,0,30) anc[i][j] = -1;
	ll n,m;
	cin >> n >> m;

	FOR(i,0,n){
		ll a,b;
		cin >> a >> b;
		if (a<b) normal.push_back({a,b});
		else normal.push_back({a,m+b});
	}

	sort(normal.begin(), normal.end());
	set<ll> things;

	for (auto&i : normal){
		things.insert(i[0]);
		things.insert(i[1]);
	}
	ll cur = 0;
	ll maxi = -1;
	ll maxting = -1;


	for (auto&i : things){
		while (cur < normal.size()){
			if (normal[cur][0] <= i){
				if (normal[cur][1] > maxi){
					maxi = normal[cur][1];
					maxting = cur;
				}
			}else break;
			cur++;
		}
		maxis[i] = maxting;
	}

	FOR(i,0,normal.size()){
		par[i] = maxis[normal[i][1]];
	}
	ll realans = 1000000000;


	FOR(i,0,normal.size()){

		ll orig = normal[i][0];
		
		ll ans = 0;

		ll lo = 0;
		ll hi = 10000000;


		while (lo < hi){

			ll mid = (lo+hi)/2;
			ll idk = i;
			FOR(j,0,30){
				if (mid&(1<<j)){
					idk = ancc(idk, j);
				}
			}
			if (idk == 1000000000 || normal[idk][1] - orig >= m){
				hi = mid;
			}else{
				lo = mid+1;
			}
		}
		ll shit = i;
		FOR(j,0,30){
			if (lo&(1<<j)){
				shit = ancc(shit, j);
			}
		}


		if (shit < normal.size() && normal[shit][1] - orig >= m) realans = min(realans, lo+1);
		



		


	}
	if (realans == 1000000000) cout << -1 << endl;
	else cout << realans << endl;








}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:52:14: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |   while (cur < normal.size()){
      |          ~~~~^~~~~~~~~~~~~~~
Main.cpp:5:33: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define FOR(i,x,y) for(ll i=x; i<y; i++)
......
   64 |  FOR(i,0,normal.size()){
      |      ~~~~~~~~~~~~~~~~~           
Main.cpp:64:2: note: in expansion of macro 'FOR'
   64 |  FOR(i,0,normal.size()){
      |  ^~~
Main.cpp:5:33: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define FOR(i,x,y) for(ll i=x; i<y; i++)
......
   70 |  FOR(i,0,normal.size()){
      |      ~~~~~~~~~~~~~~~~~           
Main.cpp:70:2: note: in expansion of macro 'FOR'
   70 |  FOR(i,0,normal.size()){
      |  ^~~
Main.cpp:103:12: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |   if (shit < normal.size() && normal[shit][1] - orig >= m) realans = min(realans, lo+1);
      |       ~~~~~^~~~~~~~~~~~~~~
Main.cpp:74:6: warning: unused variable 'ans' [-Wunused-variable]
   74 |   ll ans = 0;
      |      ^~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 117776 KB Output is correct
2 Correct 53 ms 117588 KB Output is correct
3 Correct 57 ms 117584 KB Output is correct
4 Correct 54 ms 117584 KB Output is correct
5 Correct 56 ms 117852 KB Output is correct
6 Correct 55 ms 117588 KB Output is correct
7 Correct 66 ms 117720 KB Output is correct
8 Correct 62 ms 117676 KB Output is correct
9 Correct 55 ms 117788 KB Output is correct
10 Correct 54 ms 117840 KB Output is correct
11 Correct 57 ms 117840 KB Output is correct
12 Correct 54 ms 117588 KB Output is correct
13 Correct 54 ms 117656 KB Output is correct
14 Correct 55 ms 117840 KB Output is correct
15 Correct 52 ms 117588 KB Output is correct
16 Correct 56 ms 117588 KB Output is correct
17 Correct 56 ms 117632 KB Output is correct
18 Correct 61 ms 117588 KB Output is correct
19 Correct 55 ms 117588 KB Output is correct
20 Correct 56 ms 117588 KB Output is correct
21 Correct 58 ms 117588 KB Output is correct
22 Correct 54 ms 117704 KB Output is correct
23 Correct 62 ms 117728 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 117776 KB Output is correct
2 Correct 53 ms 117588 KB Output is correct
3 Correct 57 ms 117584 KB Output is correct
4 Correct 54 ms 117584 KB Output is correct
5 Correct 56 ms 117852 KB Output is correct
6 Correct 55 ms 117588 KB Output is correct
7 Correct 66 ms 117720 KB Output is correct
8 Correct 62 ms 117676 KB Output is correct
9 Correct 55 ms 117788 KB Output is correct
10 Correct 54 ms 117840 KB Output is correct
11 Correct 57 ms 117840 KB Output is correct
12 Correct 54 ms 117588 KB Output is correct
13 Correct 54 ms 117656 KB Output is correct
14 Correct 55 ms 117840 KB Output is correct
15 Correct 52 ms 117588 KB Output is correct
16 Correct 56 ms 117588 KB Output is correct
17 Correct 56 ms 117632 KB Output is correct
18 Correct 61 ms 117588 KB Output is correct
19 Correct 55 ms 117588 KB Output is correct
20 Correct 56 ms 117588 KB Output is correct
21 Correct 58 ms 117588 KB Output is correct
22 Correct 54 ms 117704 KB Output is correct
23 Correct 62 ms 117728 KB Output is correct
24 Correct 59 ms 117752 KB Output is correct
25 Correct 53 ms 117844 KB Output is correct
26 Correct 54 ms 117840 KB Output is correct
27 Correct 53 ms 117844 KB Output is correct
28 Correct 52 ms 117840 KB Output is correct
29 Correct 54 ms 117840 KB Output is correct
30 Correct 52 ms 117844 KB Output is correct
31 Correct 53 ms 117844 KB Output is correct
32 Correct 54 ms 117816 KB Output is correct
33 Correct 53 ms 117660 KB Output is correct
34 Correct 56 ms 117788 KB Output is correct
35 Correct 55 ms 117840 KB Output is correct
36 Correct 57 ms 117848 KB Output is correct
37 Correct 53 ms 117800 KB Output is correct
38 Correct 53 ms 117852 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 117776 KB Output is correct
2 Correct 53 ms 117588 KB Output is correct
3 Correct 57 ms 117584 KB Output is correct
4 Correct 54 ms 117584 KB Output is correct
5 Correct 56 ms 117852 KB Output is correct
6 Correct 55 ms 117588 KB Output is correct
7 Correct 66 ms 117720 KB Output is correct
8 Correct 62 ms 117676 KB Output is correct
9 Correct 55 ms 117788 KB Output is correct
10 Correct 54 ms 117840 KB Output is correct
11 Correct 57 ms 117840 KB Output is correct
12 Correct 54 ms 117588 KB Output is correct
13 Correct 54 ms 117656 KB Output is correct
14 Correct 55 ms 117840 KB Output is correct
15 Correct 52 ms 117588 KB Output is correct
16 Correct 56 ms 117588 KB Output is correct
17 Correct 56 ms 117632 KB Output is correct
18 Correct 61 ms 117588 KB Output is correct
19 Correct 55 ms 117588 KB Output is correct
20 Correct 56 ms 117588 KB Output is correct
21 Correct 58 ms 117588 KB Output is correct
22 Correct 54 ms 117704 KB Output is correct
23 Correct 62 ms 117728 KB Output is correct
24 Correct 59 ms 117752 KB Output is correct
25 Correct 53 ms 117844 KB Output is correct
26 Correct 54 ms 117840 KB Output is correct
27 Correct 53 ms 117844 KB Output is correct
28 Correct 52 ms 117840 KB Output is correct
29 Correct 54 ms 117840 KB Output is correct
30 Correct 52 ms 117844 KB Output is correct
31 Correct 53 ms 117844 KB Output is correct
32 Correct 54 ms 117816 KB Output is correct
33 Correct 53 ms 117660 KB Output is correct
34 Correct 56 ms 117788 KB Output is correct
35 Correct 55 ms 117840 KB Output is correct
36 Correct 57 ms 117848 KB Output is correct
37 Correct 53 ms 117800 KB Output is correct
38 Correct 53 ms 117852 KB Output is correct
39 Correct 63 ms 119376 KB Output is correct
40 Correct 80 ms 119432 KB Output is correct
41 Correct 69 ms 119380 KB Output is correct
42 Correct 64 ms 118868 KB Output is correct
43 Correct 60 ms 118864 KB Output is correct
44 Correct 61 ms 118784 KB Output is correct
45 Correct 63 ms 118868 KB Output is correct
46 Correct 72 ms 118868 KB Output is correct
47 Correct 64 ms 119376 KB Output is correct
48 Correct 64 ms 119380 KB Output is correct
49 Correct 63 ms 119376 KB Output is correct
50 Correct 61 ms 118864 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 117600 KB Output is correct
2 Correct 52 ms 117588 KB Output is correct
3 Correct 52 ms 117588 KB Output is correct
4 Correct 54 ms 117592 KB Output is correct
5 Correct 59 ms 117804 KB Output is correct
6 Correct 54 ms 117840 KB Output is correct
7 Correct 51 ms 117772 KB Output is correct
8 Correct 60 ms 117840 KB Output is correct
9 Correct 56 ms 117904 KB Output is correct
10 Correct 55 ms 117928 KB Output is correct
11 Correct 57 ms 117872 KB Output is correct
12 Correct 58 ms 117840 KB Output is correct
13 Correct 56 ms 117732 KB Output is correct
14 Correct 65 ms 117844 KB Output is correct
15 Correct 65 ms 119380 KB Output is correct
16 Correct 66 ms 118936 KB Output is correct
17 Correct 78 ms 118868 KB Output is correct
18 Correct 74 ms 118768 KB Output is correct
19 Correct 72 ms 119548 KB Output is correct
20 Correct 360 ms 141260 KB Output is correct
21 Correct 660 ms 188804 KB Output is correct
22 Correct 643 ms 188916 KB Output is correct
23 Correct 1018 ms 166128 KB Output is correct
24 Correct 880 ms 188912 KB Output is correct
25 Correct 586 ms 161872 KB Output is correct
26 Correct 729 ms 166896 KB Output is correct
27 Correct 1145 ms 167152 KB Output is correct
28 Correct 656 ms 187716 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 117728 KB Output is correct
2 Correct 58 ms 117584 KB Output is correct
3 Correct 58 ms 117836 KB Output is correct
4 Correct 58 ms 117604 KB Output is correct
5 Correct 64 ms 117624 KB Output is correct
6 Correct 58 ms 117724 KB Output is correct
7 Correct 57 ms 117716 KB Output is correct
8 Correct 57 ms 117844 KB Output is correct
9 Correct 56 ms 117804 KB Output is correct
10 Correct 60 ms 117840 KB Output is correct
11 Correct 61 ms 117844 KB Output is correct
12 Correct 76 ms 119376 KB Output is correct
13 Correct 70 ms 118928 KB Output is correct
14 Correct 68 ms 118864 KB Output is correct
15 Correct 391 ms 141300 KB Output is correct
16 Correct 1020 ms 166132 KB Output is correct
17 Correct 658 ms 188908 KB Output is correct
18 Correct 662 ms 188820 KB Output is correct
19 Correct 835 ms 188916 KB Output is correct
20 Correct 990 ms 166156 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 117776 KB Output is correct
2 Correct 53 ms 117588 KB Output is correct
3 Correct 57 ms 117584 KB Output is correct
4 Correct 54 ms 117584 KB Output is correct
5 Correct 56 ms 117852 KB Output is correct
6 Correct 55 ms 117588 KB Output is correct
7 Correct 66 ms 117720 KB Output is correct
8 Correct 62 ms 117676 KB Output is correct
9 Correct 55 ms 117788 KB Output is correct
10 Correct 54 ms 117840 KB Output is correct
11 Correct 57 ms 117840 KB Output is correct
12 Correct 54 ms 117588 KB Output is correct
13 Correct 54 ms 117656 KB Output is correct
14 Correct 55 ms 117840 KB Output is correct
15 Correct 52 ms 117588 KB Output is correct
16 Correct 56 ms 117588 KB Output is correct
17 Correct 56 ms 117632 KB Output is correct
18 Correct 61 ms 117588 KB Output is correct
19 Correct 55 ms 117588 KB Output is correct
20 Correct 56 ms 117588 KB Output is correct
21 Correct 58 ms 117588 KB Output is correct
22 Correct 54 ms 117704 KB Output is correct
23 Correct 62 ms 117728 KB Output is correct
24 Correct 59 ms 117752 KB Output is correct
25 Correct 53 ms 117844 KB Output is correct
26 Correct 54 ms 117840 KB Output is correct
27 Correct 53 ms 117844 KB Output is correct
28 Correct 52 ms 117840 KB Output is correct
29 Correct 54 ms 117840 KB Output is correct
30 Correct 52 ms 117844 KB Output is correct
31 Correct 53 ms 117844 KB Output is correct
32 Correct 54 ms 117816 KB Output is correct
33 Correct 53 ms 117660 KB Output is correct
34 Correct 56 ms 117788 KB Output is correct
35 Correct 55 ms 117840 KB Output is correct
36 Correct 57 ms 117848 KB Output is correct
37 Correct 53 ms 117800 KB Output is correct
38 Correct 53 ms 117852 KB Output is correct
39 Correct 63 ms 119376 KB Output is correct
40 Correct 80 ms 119432 KB Output is correct
41 Correct 69 ms 119380 KB Output is correct
42 Correct 64 ms 118868 KB Output is correct
43 Correct 60 ms 118864 KB Output is correct
44 Correct 61 ms 118784 KB Output is correct
45 Correct 63 ms 118868 KB Output is correct
46 Correct 72 ms 118868 KB Output is correct
47 Correct 64 ms 119376 KB Output is correct
48 Correct 64 ms 119380 KB Output is correct
49 Correct 63 ms 119376 KB Output is correct
50 Correct 61 ms 118864 KB Output is correct
51 Correct 57 ms 117600 KB Output is correct
52 Correct 52 ms 117588 KB Output is correct
53 Correct 52 ms 117588 KB Output is correct
54 Correct 54 ms 117592 KB Output is correct
55 Correct 59 ms 117804 KB Output is correct
56 Correct 54 ms 117840 KB Output is correct
57 Correct 51 ms 117772 KB Output is correct
58 Correct 60 ms 117840 KB Output is correct
59 Correct 56 ms 117904 KB Output is correct
60 Correct 55 ms 117928 KB Output is correct
61 Correct 57 ms 117872 KB Output is correct
62 Correct 58 ms 117840 KB Output is correct
63 Correct 56 ms 117732 KB Output is correct
64 Correct 65 ms 117844 KB Output is correct
65 Correct 65 ms 119380 KB Output is correct
66 Correct 66 ms 118936 KB Output is correct
67 Correct 78 ms 118868 KB Output is correct
68 Correct 74 ms 118768 KB Output is correct
69 Correct 72 ms 119548 KB Output is correct
70 Correct 360 ms 141260 KB Output is correct
71 Correct 660 ms 188804 KB Output is correct
72 Correct 643 ms 188916 KB Output is correct
73 Correct 1018 ms 166128 KB Output is correct
74 Correct 880 ms 188912 KB Output is correct
75 Correct 586 ms 161872 KB Output is correct
76 Correct 729 ms 166896 KB Output is correct
77 Correct 1145 ms 167152 KB Output is correct
78 Correct 656 ms 187716 KB Output is correct
79 Correct 57 ms 117728 KB Output is correct
80 Correct 58 ms 117584 KB Output is correct
81 Correct 58 ms 117836 KB Output is correct
82 Correct 58 ms 117604 KB Output is correct
83 Correct 64 ms 117624 KB Output is correct
84 Correct 58 ms 117724 KB Output is correct
85 Correct 57 ms 117716 KB Output is correct
86 Correct 57 ms 117844 KB Output is correct
87 Correct 56 ms 117804 KB Output is correct
88 Correct 60 ms 117840 KB Output is correct
89 Correct 61 ms 117844 KB Output is correct
90 Correct 76 ms 119376 KB Output is correct
91 Correct 70 ms 118928 KB Output is correct
92 Correct 68 ms 118864 KB Output is correct
93 Correct 391 ms 141300 KB Output is correct
94 Correct 1020 ms 166132 KB Output is correct
95 Correct 658 ms 188908 KB Output is correct
96 Correct 662 ms 188820 KB Output is correct
97 Correct 835 ms 188916 KB Output is correct
98 Correct 990 ms 166156 KB Output is correct
99 Correct 657 ms 189240 KB Output is correct
100 Correct 642 ms 188916 KB Output is correct
101 Correct 1085 ms 189236 KB Output is correct
102 Correct 1054 ms 189020 KB Output is correct
103 Correct 1038 ms 167116 KB Output is correct
104 Correct 681 ms 186692 KB Output is correct
105 Correct 796 ms 187632 KB Output is correct