oj.uz

Submission #1019901

# Submission time Handle Problem Language Result Execution time Memory
1019901 2024-07-11T10:27:51 Z beaconmc Fire (BOI24_fire) C++14
40 / 100
 223 ms 95728 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[100005][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,0,100005) 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++)
......
   69 |  FOR(i,0,normal.size()){
      |      ~~~~~~~~~~~~~~~~~           
Main.cpp:69:2: note: in expansion of macro 'FOR'
   69 |  FOR(i,0,normal.size()){
      |  ^~~
Main.cpp:101:12: 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]
  101 |   if (shit < normal.size() && normal[shit][1] - orig >= m) realans = min(realans, lo+1);
      |       ~~~~~^~~~~~~~~~~~~~~
Main.cpp:72:6: warning: unused variable 'ans' [-Wunused-variable]
   72 |   ll ans = 0;
      |      ^~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 23900 KB Output is correct
2 Correct 4 ms 23900 KB Output is correct
3 Correct 3 ms 23900 KB Output is correct
4 Correct 4 ms 23900 KB Output is correct
5 Correct 5 ms 23736 KB Output is correct
6 Correct 4 ms 23900 KB Output is correct
7 Correct 5 ms 23844 KB Output is correct
8 Correct 4 ms 23900 KB Output is correct
9 Correct 4 ms 23900 KB Output is correct
10 Correct 4 ms 23900 KB Output is correct
11 Correct 3 ms 23900 KB Output is correct
12 Correct 4 ms 23900 KB Output is correct
13 Correct 3 ms 23900 KB Output is correct
14 Correct 3 ms 23896 KB Output is correct
15 Correct 4 ms 23900 KB Output is correct
16 Correct 4 ms 23900 KB Output is correct
17 Correct 4 ms 23792 KB Output is correct
18 Correct 3 ms 23900 KB Output is correct
19 Correct 4 ms 23900 KB Output is correct
20 Correct 3 ms 23900 KB Output is correct
21 Correct 3 ms 23900 KB Output is correct
22 Correct 3 ms 23900 KB Output is correct
23 Correct 5 ms 23900 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 23900 KB Output is correct
2 Correct 4 ms 23900 KB Output is correct
3 Correct 3 ms 23900 KB Output is correct
4 Correct 4 ms 23900 KB Output is correct
5 Correct 5 ms 23736 KB Output is correct
6 Correct 4 ms 23900 KB Output is correct
7 Correct 5 ms 23844 KB Output is correct
8 Correct 4 ms 23900 KB Output is correct
9 Correct 4 ms 23900 KB Output is correct
10 Correct 4 ms 23900 KB Output is correct
11 Correct 3 ms 23900 KB Output is correct
12 Correct 4 ms 23900 KB Output is correct
13 Correct 3 ms 23900 KB Output is correct
14 Correct 3 ms 23896 KB Output is correct
15 Correct 4 ms 23900 KB Output is correct
16 Correct 4 ms 23900 KB Output is correct
17 Correct 4 ms 23792 KB Output is correct
18 Correct 3 ms 23900 KB Output is correct
19 Correct 4 ms 23900 KB Output is correct
20 Correct 3 ms 23900 KB Output is correct
21 Correct 3 ms 23900 KB Output is correct
22 Correct 3 ms 23900 KB Output is correct
23 Correct 5 ms 23900 KB Output is correct
24 Correct 4 ms 23900 KB Output is correct
25 Correct 4 ms 23900 KB Output is correct
26 Correct 5 ms 23900 KB Output is correct
27 Correct 4 ms 23900 KB Output is correct
28 Correct 4 ms 23900 KB Output is correct
29 Correct 4 ms 23924 KB Output is correct
30 Correct 5 ms 23900 KB Output is correct
31 Correct 4 ms 23900 KB Output is correct
32 Correct 4 ms 23976 KB Output is correct
33 Correct 5 ms 23900 KB Output is correct
34 Correct 5 ms 23900 KB Output is correct
35 Correct 5 ms 23900 KB Output is correct
36 Correct 5 ms 23900 KB Output is correct
37 Correct 4 ms 23896 KB Output is correct
38 Correct 5 ms 23936 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 23900 KB Output is correct
2 Correct 4 ms 23900 KB Output is correct
3 Correct 3 ms 23900 KB Output is correct
4 Correct 4 ms 23900 KB Output is correct
5 Correct 5 ms 23736 KB Output is correct
6 Correct 4 ms 23900 KB Output is correct
7 Correct 5 ms 23844 KB Output is correct
8 Correct 4 ms 23900 KB Output is correct
9 Correct 4 ms 23900 KB Output is correct
10 Correct 4 ms 23900 KB Output is correct
11 Correct 3 ms 23900 KB Output is correct
12 Correct 4 ms 23900 KB Output is correct
13 Correct 3 ms 23900 KB Output is correct
14 Correct 3 ms 23896 KB Output is correct
15 Correct 4 ms 23900 KB Output is correct
16 Correct 4 ms 23900 KB Output is correct
17 Correct 4 ms 23792 KB Output is correct
18 Correct 3 ms 23900 KB Output is correct
19 Correct 4 ms 23900 KB Output is correct
20 Correct 3 ms 23900 KB Output is correct
21 Correct 3 ms 23900 KB Output is correct
22 Correct 3 ms 23900 KB Output is correct
23 Correct 5 ms 23900 KB Output is correct
24 Correct 4 ms 23900 KB Output is correct
25 Correct 4 ms 23900 KB Output is correct
26 Correct 5 ms 23900 KB Output is correct
27 Correct 4 ms 23900 KB Output is correct
28 Correct 4 ms 23900 KB Output is correct
29 Correct 4 ms 23924 KB Output is correct
30 Correct 5 ms 23900 KB Output is correct
31 Correct 4 ms 23900 KB Output is correct
32 Correct 4 ms 23976 KB Output is correct
33 Correct 5 ms 23900 KB Output is correct
34 Correct 5 ms 23900 KB Output is correct
35 Correct 5 ms 23900 KB Output is correct
36 Correct 5 ms 23900 KB Output is correct
37 Correct 4 ms 23896 KB Output is correct
38 Correct 5 ms 23936 KB Output is correct
39 Correct 17 ms 25616 KB Output is correct
40 Correct 15 ms 25616 KB Output is correct
41 Correct 16 ms 25432 KB Output is correct
42 Correct 13 ms 24924 KB Output is correct
43 Correct 12 ms 24924 KB Output is correct
44 Correct 14 ms 25072 KB Output is correct
45 Correct 17 ms 24920 KB Output is correct
46 Correct 14 ms 24924 KB Output is correct
47 Correct 16 ms 25372 KB Output is correct
48 Correct 13 ms 25436 KB Output is correct
49 Correct 14 ms 25544 KB Output is correct
50 Correct 13 ms 24924 KB Output is correct

Subtask #4
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 23900 KB Output is correct
2 Correct 4 ms 23900 KB Output is correct
3 Correct 4 ms 23896 KB Output is correct
4 Correct 4 ms 23896 KB Output is correct
5 Correct 4 ms 23900 KB Output is correct
6 Correct 4 ms 23900 KB Output is correct
7 Correct 4 ms 23900 KB Output is correct
8 Correct 4 ms 23900 KB Output is correct
9 Correct 4 ms 23900 KB Output is correct
10 Correct 5 ms 23896 KB Output is correct
11 Correct 4 ms 23992 KB Output is correct
12 Correct 4 ms 23900 KB Output is correct
13 Correct 3 ms 23900 KB Output is correct
14 Correct 4 ms 23896 KB Output is correct
15 Correct 15 ms 25436 KB Output is correct
16 Correct 14 ms 25024 KB Output is correct
17 Correct 12 ms 24924 KB Output is correct
18 Correct 15 ms 25072 KB Output is correct
19 Correct 14 ms 25436 KB Output is correct
20 Runtime error 223 ms 95564 KB Execution killed with signal 11
21 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 23900 KB Output is correct
2 Correct 4 ms 23884 KB Output is correct
3 Correct 3 ms 23900 KB Output is correct
4 Correct 3 ms 23900 KB Output is correct
5 Correct 3 ms 23900 KB Output is correct
6 Correct 3 ms 23900 KB Output is correct
7 Correct 4 ms 23900 KB Output is correct
8 Correct 5 ms 23900 KB Output is correct
9 Correct 6 ms 24152 KB Output is correct
10 Correct 5 ms 23900 KB Output is correct
11 Correct 4 ms 23900 KB Output is correct
12 Correct 14 ms 25600 KB Output is correct
13 Correct 18 ms 25068 KB Output is correct
14 Correct 12 ms 25072 KB Output is correct
15 Runtime error 214 ms 95728 KB Execution killed with signal 11
16 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 23900 KB Output is correct
2 Correct 4 ms 23900 KB Output is correct
3 Correct 3 ms 23900 KB Output is correct
4 Correct 4 ms 23900 KB Output is correct
5 Correct 5 ms 23736 KB Output is correct
6 Correct 4 ms 23900 KB Output is correct
7 Correct 5 ms 23844 KB Output is correct
8 Correct 4 ms 23900 KB Output is correct
9 Correct 4 ms 23900 KB Output is correct
10 Correct 4 ms 23900 KB Output is correct
11 Correct 3 ms 23900 KB Output is correct
12 Correct 4 ms 23900 KB Output is correct
13 Correct 3 ms 23900 KB Output is correct
14 Correct 3 ms 23896 KB Output is correct
15 Correct 4 ms 23900 KB Output is correct
16 Correct 4 ms 23900 KB Output is correct
17 Correct 4 ms 23792 KB Output is correct
18 Correct 3 ms 23900 KB Output is correct
19 Correct 4 ms 23900 KB Output is correct
20 Correct 3 ms 23900 KB Output is correct
21 Correct 3 ms 23900 KB Output is correct
22 Correct 3 ms 23900 KB Output is correct
23 Correct 5 ms 23900 KB Output is correct
24 Correct 4 ms 23900 KB Output is correct
25 Correct 4 ms 23900 KB Output is correct
26 Correct 5 ms 23900 KB Output is correct
27 Correct 4 ms 23900 KB Output is correct
28 Correct 4 ms 23900 KB Output is correct
29 Correct 4 ms 23924 KB Output is correct
30 Correct 5 ms 23900 KB Output is correct
31 Correct 4 ms 23900 KB Output is correct
32 Correct 4 ms 23976 KB Output is correct
33 Correct 5 ms 23900 KB Output is correct
34 Correct 5 ms 23900 KB Output is correct
35 Correct 5 ms 23900 KB Output is correct
36 Correct 5 ms 23900 KB Output is correct
37 Correct 4 ms 23896 KB Output is correct
38 Correct 5 ms 23936 KB Output is correct
39 Correct 17 ms 25616 KB Output is correct
40 Correct 15 ms 25616 KB Output is correct
41 Correct 16 ms 25432 KB Output is correct
42 Correct 13 ms 24924 KB Output is correct
43 Correct 12 ms 24924 KB Output is correct
44 Correct 14 ms 25072 KB Output is correct
45 Correct 17 ms 24920 KB Output is correct
46 Correct 14 ms 24924 KB Output is correct
47 Correct 16 ms 25372 KB Output is correct
48 Correct 13 ms 25436 KB Output is correct
49 Correct 14 ms 25544 KB Output is correct
50 Correct 13 ms 24924 KB Output is correct
51 Correct 3 ms 23900 KB Output is correct
52 Correct 4 ms 23900 KB Output is correct
53 Correct 4 ms 23896 KB Output is correct
54 Correct 4 ms 23896 KB Output is correct
55 Correct 4 ms 23900 KB Output is correct
56 Correct 4 ms 23900 KB Output is correct
57 Correct 4 ms 23900 KB Output is correct
58 Correct 4 ms 23900 KB Output is correct
59 Correct 4 ms 23900 KB Output is correct
60 Correct 5 ms 23896 KB Output is correct
61 Correct 4 ms 23992 KB Output is correct
62 Correct 4 ms 23900 KB Output is correct
63 Correct 3 ms 23900 KB Output is correct
64 Correct 4 ms 23896 KB Output is correct
65 Correct 15 ms 25436 KB Output is correct
66 Correct 14 ms 25024 KB Output is correct
67 Correct 12 ms 24924 KB Output is correct
68 Correct 15 ms 25072 KB Output is correct
69 Correct 14 ms 25436 KB Output is correct
70 Runtime error 223 ms 95564 KB Execution killed with signal 11
71 Halted 0 ms 0 KB -