oj.uz

Submission #1066828

# Submission time Handle Problem Language Result Execution time Memory
1066828 2024-08-20T07:49:25 Z vjudge1 Fire (BOI24_fire) C++17
53 / 100
 48 ms 5724 KB 
#include <bits/stdc++.h>
#define ll long long
#define endl "\n"
#define fi first 
#define se second

using namespace std;


int n, m;

void solve(){
    cin >> n >> m;
    vector<pair<int, int>> vai(n);
    for(int i = 0; i < n; i++){
        cin >> vai[i].fi >> vai[i].se;
    }
    sort(vai.begin(), vai.end());

    for(int i = 0; i < n; i++){
        if(vai[i].se < vai[i].fi){
            vai[i].se += m;
        }
    }

    int res = 1e9;
    if(n <= 5000){
        for(int i = 0; i < n; i++){
            int l = 0;
            int banyak = 1;
            int nxt = vai[i].se;
            int cur = vai[i].se;
            bool bisa = true;
            while(cur < vai[i].fi + m){
                while(l < n && vai[l].fi <= cur){
                    nxt = max(nxt, vai[l].se);
                    l++;
                }
                if((l == n && nxt < vai[i].fi + m) || (nxt == cur)){
                    bisa = false;
                    break;
                }
                cur = nxt;
                banyak++;
                
            }
            if(bisa){
                res = min(res, banyak);
            }
                
        }
    }else{
        int l = 0;
        int banyak = 0;
        int nxt = 0;
        int cur = 0;
        bool bisa = true;
        while(cur < m){
            while(l < n && vai[l].fi <= cur){
                nxt = max(nxt, vai[l].se);
                l++;
            }
            if((l == n && nxt < m) || (nxt == cur)){
                bisa = false;
                break;
            }
            cur = nxt;
            banyak++;
            
        }
        if(bisa){
            res = min(res, banyak);
        }
    }
    
    if(res != 1e9){
        cout << res << endl;
    }else{
        cout << -1 << endl;
    }
    
    

}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    int t = 1;
    while(t--){
        solve();
    }
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 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 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 1 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 348 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 1 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 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 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 1 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 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 352 KB Output is correct
31 Correct 0 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 0 ms 348 KB Output is correct
36 Correct 0 ms 352 KB Output is correct
37 Correct 1 ms 596 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 1 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 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 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 1 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 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 352 KB Output is correct
31 Correct 0 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 0 ms 348 KB Output is correct
36 Correct 0 ms 352 KB Output is correct
37 Correct 1 ms 596 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 20 ms 348 KB Output is correct
40 Correct 30 ms 604 KB Output is correct
41 Correct 20 ms 596 KB Output is correct
42 Correct 32 ms 348 KB Output is correct
43 Correct 17 ms 348 KB Output is correct
44 Correct 32 ms 348 KB Output is correct
45 Correct 33 ms 348 KB Output is correct
46 Correct 30 ms 344 KB Output is correct
47 Correct 19 ms 348 KB Output is correct
48 Correct 21 ms 348 KB Output is correct
49 Correct 25 ms 348 KB Output is correct
50 Correct 20 ms 348 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 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 1 ms 348 KB Output is correct
10 Correct 1 ms 348 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 1 ms 348 KB Output is correct
15 Correct 24 ms 600 KB Output is correct
16 Correct 32 ms 348 KB Output is correct
17 Correct 17 ms 348 KB Output is correct
18 Correct 32 ms 596 KB Output is correct
19 Correct 19 ms 348 KB Output is correct
20 Correct 19 ms 2652 KB Output is correct
21 Correct 41 ms 5712 KB Output is correct
22 Correct 40 ms 5724 KB Output is correct
23 Correct 37 ms 4704 KB Output is correct
24 Correct 48 ms 5724 KB Output is correct
25 Correct 39 ms 5200 KB Output is correct
26 Correct 41 ms 5724 KB Output is correct
27 Correct 42 ms 5712 KB Output is correct
28 Correct 40 ms 5716 KB Output is correct

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 460 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 344 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 20 ms 596 KB Output is correct
13 Correct 31 ms 556 KB Output is correct
14 Correct 19 ms 348 KB Output is correct
15 Correct 19 ms 2648 KB Output is correct
16 Correct 37 ms 4700 KB Output is correct
17 Incorrect 41 ms 5712 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 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 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 1 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 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 352 KB Output is correct
31 Correct 0 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 0 ms 348 KB Output is correct
36 Correct 0 ms 352 KB Output is correct
37 Correct 1 ms 596 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 20 ms 348 KB Output is correct
40 Correct 30 ms 604 KB Output is correct
41 Correct 20 ms 596 KB Output is correct
42 Correct 32 ms 348 KB Output is correct
43 Correct 17 ms 348 KB Output is correct
44 Correct 32 ms 348 KB Output is correct
45 Correct 33 ms 348 KB Output is correct
46 Correct 30 ms 344 KB Output is correct
47 Correct 19 ms 348 KB Output is correct
48 Correct 21 ms 348 KB Output is correct
49 Correct 25 ms 348 KB Output is correct
50 Correct 20 ms 348 KB Output is correct
51 Correct 1 ms 348 KB Output is correct
52 Correct 1 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 1 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 1 ms 348 KB Output is correct
60 Correct 1 ms 348 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 1 ms 348 KB Output is correct
65 Correct 24 ms 600 KB Output is correct
66 Correct 32 ms 348 KB Output is correct
67 Correct 17 ms 348 KB Output is correct
68 Correct 32 ms 596 KB Output is correct
69 Correct 19 ms 348 KB Output is correct
70 Correct 19 ms 2652 KB Output is correct
71 Correct 41 ms 5712 KB Output is correct
72 Correct 40 ms 5724 KB Output is correct
73 Correct 37 ms 4704 KB Output is correct
74 Correct 48 ms 5724 KB Output is correct
75 Correct 39 ms 5200 KB Output is correct
76 Correct 41 ms 5724 KB Output is correct
77 Correct 42 ms 5712 KB Output is correct
78 Correct 40 ms 5716 KB Output is correct
79 Correct 1 ms 344 KB Output is correct
80 Correct 0 ms 348 KB Output is correct
81 Correct 0 ms 460 KB Output is correct
82 Correct 1 ms 604 KB Output is correct
83 Correct 1 ms 344 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 0 ms 348 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 348 KB Output is correct
90 Correct 20 ms 596 KB Output is correct
91 Correct 31 ms 556 KB Output is correct
92 Correct 19 ms 348 KB Output is correct
93 Correct 19 ms 2648 KB Output is correct
94 Correct 37 ms 4700 KB Output is correct
95 Incorrect 41 ms 5712 KB Output isn't correct
96 Halted 0 ms 0 KB -