oj.uz

Submission #1059288

# Submission time Handle Problem Language Result Execution time Memory
1059288 2024-08-14T20:28:45 Z ZeroCool Fire (BOI24_fire) C++14
100 / 100
 387 ms 54988 KB 
#include <bits/stdc++.h>

using namespace std;

#define ar array
#define int long long
#define ld long double
#define crash assert(69 == 420)

const int MOD = 1e9 + 7;
const int INF = 1e9;

const int N = 3000;
const int K = 300;
const int LOG = 30;

/*
Bidikland can be represneted like a circle with a lot of of smaller circles inside it. The bigest circle represent the border, and the smaller represent the municipalities. 
No two circles can interesect but the can be contained within eachother. Lets defne the territory of municipality as their circle with the smaller circles contained inside it removed (see drawing for reference)
On the edge of any two mmunicipalities there are pay tolls, each toll costs exactly one Bidikdollar. One day Bidik realized tha the machines at all of the tolls are broken and he needed to fix them.
He hired Viktors company (con world) to send men to fix them. This is how to process of fixing goes: A mechanic starts from a municipality without any municipalities within it, he moves through the municipalities and needs to end at another municipality with no municipalities within it(the path he takes must be a simple path), on this trip he fixes all the tolls he passes but also has to pay them, so the cost of the trip is the number of tolls passed. What is minimal cost Bidik has to spend on tolls in order to fix all of them?

*/

signed main(){ios_base::sync_with_stdio(false);cin.tie(0);
	int n, m;
	cin>>n>>m;
	vector<ar<int, 2>> v;
	int s[n], e[n];
	set<int>ss = {0, m};
	for(int i= 0;i <n ;i++){
		cin>>s[i]>>e[i];
		ss.insert(s[i]);
		ss.insert(e[i]);
	}
	map<int,int> cmp;
	for(auto u: ss)cmp[u] = cmp.size();
	m = cmp.size();
	int mx[m + 1];
	memset(mx, 0,sizeof mx);
	for(int i = 0;i <n;i++){
		s[i] = cmp[s[i]], e[i] = cmp[e[i]];
		if(s[i] > e[i])mx[s[i]] = m, v.push_back({s[i], e[i]});
		mx[s[i]] = max(mx[s[i]], e[i]);
	}
	for(int i =1 ;i <= m;i++)mx[i] = max(mx[i], mx[i - 1]);
	if(v.empty()){
		cout<<-1;
		return 0;
	}
	int ans = INF;
	for(auto [a, b]: v){
		int cnt = 1;
		int u = b;
		while(u < a){
			if(mx[u] <= u)break;
			u = mx[u];
			++cnt;
		}
		if(u >= a)ans = min(ans, cnt);
	}
	if(ans >= INF)ans = -1;
	cout<<ans;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:52:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   52 |  for(auto [a, b]: v){
      |           ^

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 604 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 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 600 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 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 456 KB Output is correct
23 Correct 0 ms 348 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 604 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 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 600 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 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 456 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 460 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 604 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 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 600 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 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 456 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 460 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 4 ms 1628 KB Output is correct
40 Correct 4 ms 1624 KB Output is correct
41 Correct 4 ms 1800 KB Output is correct
42 Correct 4 ms 1116 KB Output is correct
43 Correct 3 ms 860 KB Output is correct
44 Correct 3 ms 1072 KB Output is correct
45 Correct 3 ms 1116 KB Output is correct
46 Correct 3 ms 1116 KB Output is correct
47 Correct 4 ms 1628 KB Output is correct
48 Correct 4 ms 1784 KB Output is correct
49 Correct 3 ms 1716 KB Output is correct
50 Correct 4 ms 1372 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 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 1 ms 600 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 5 ms 1796 KB Output is correct
16 Correct 3 ms 1116 KB Output is correct
17 Correct 2 ms 860 KB Output is correct
18 Correct 3 ms 1180 KB Output is correct
19 Correct 4 ms 1628 KB Output is correct
20 Correct 19 ms 6568 KB Output is correct
21 Correct 377 ms 54300 KB Output is correct
22 Correct 369 ms 54356 KB Output is correct
23 Correct 209 ms 29780 KB Output is correct
24 Correct 327 ms 54356 KB Output is correct
25 Correct 211 ms 26568 KB Output is correct
26 Correct 192 ms 30804 KB Output is correct
27 Correct 196 ms 30804 KB Output is correct
28 Correct 291 ms 52988 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory 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 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 424 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 344 KB Output is correct
12 Correct 4 ms 1628 KB Output is correct
13 Correct 3 ms 1116 KB Output is correct
14 Correct 3 ms 1116 KB Output is correct
15 Correct 17 ms 6372 KB Output is correct
16 Correct 203 ms 29912 KB Output is correct
17 Correct 387 ms 54292 KB Output is correct
18 Correct 375 ms 54988 KB Output is correct
19 Correct 299 ms 54200 KB Output is correct
20 Correct 199 ms 29776 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 604 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 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 600 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 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 456 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 460 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 4 ms 1628 KB Output is correct
40 Correct 4 ms 1624 KB Output is correct
41 Correct 4 ms 1800 KB Output is correct
42 Correct 4 ms 1116 KB Output is correct
43 Correct 3 ms 860 KB Output is correct
44 Correct 3 ms 1072 KB Output is correct
45 Correct 3 ms 1116 KB Output is correct
46 Correct 3 ms 1116 KB Output is correct
47 Correct 4 ms 1628 KB Output is correct
48 Correct 4 ms 1784 KB Output is correct
49 Correct 3 ms 1716 KB Output is correct
50 Correct 4 ms 1372 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 600 KB Output is correct
53 Correct 0 ms 344 KB Output is correct
54 Correct 0 ms 344 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 1 ms 600 KB Output is correct
61 Correct 0 ms 348 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 5 ms 1796 KB Output is correct
66 Correct 3 ms 1116 KB Output is correct
67 Correct 2 ms 860 KB Output is correct
68 Correct 3 ms 1180 KB Output is correct
69 Correct 4 ms 1628 KB Output is correct
70 Correct 19 ms 6568 KB Output is correct
71 Correct 377 ms 54300 KB Output is correct
72 Correct 369 ms 54356 KB Output is correct
73 Correct 209 ms 29780 KB Output is correct
74 Correct 327 ms 54356 KB Output is correct
75 Correct 211 ms 26568 KB Output is correct
76 Correct 192 ms 30804 KB Output is correct
77 Correct 196 ms 30804 KB Output is correct
78 Correct 291 ms 52988 KB Output is correct
79 Correct 0 ms 348 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 424 KB Output is correct
86 Correct 0 ms 348 KB Output is correct
87 Correct 0 ms 348 KB Output is correct
88 Correct 0 ms 348 KB Output is correct
89 Correct 0 ms 344 KB Output is correct
90 Correct 4 ms 1628 KB Output is correct
91 Correct 3 ms 1116 KB Output is correct
92 Correct 3 ms 1116 KB Output is correct
93 Correct 17 ms 6372 KB Output is correct
94 Correct 203 ms 29912 KB Output is correct
95 Correct 387 ms 54292 KB Output is correct
96 Correct 375 ms 54988 KB Output is correct
97 Correct 299 ms 54200 KB Output is correct
98 Correct 199 ms 29776 KB Output is correct
99 Correct 334 ms 54608 KB Output is correct
100 Correct 353 ms 54152 KB Output is correct
101 Correct 296 ms 54236 KB Output is correct
102 Correct 309 ms 54348 KB Output is correct
103 Correct 209 ms 30916 KB Output is correct
104 Correct 267 ms 51940 KB Output is correct
105 Correct 178 ms 52976 KB Output is correct