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Submission #530454

# Submission time Handle Problem Language Result Execution time Memory
530454 2022-02-25T11:45:37 Z chaoyue A Difficult(y) Choice (BOI21_books) C++14
100 / 100
 2 ms 1096 KB 
#include <bits/stdc++.h>
#include "books.h"
using namespace std;

#define ll long long

void solve(int n, int k, ll A, int S) {
    vector<ll> v(n+1, 0);
    vector<int> ans;
    int l=0, r=n, m;
    ll pre=0, sum=0;
    for(int i=1; i<k; i++){
    	v[i] = skim(i);
    	pre += v[i];
    	if(pre > A * 2ll){
    		impossible();
    		return;
		}
	}
	//lower bound binary search
	
	while(r-l > 1){
		m = (l+r)/2;
		if(!v[m]) v[m] = skim(m);
		if(v[m] * (ll)k < A){
			l = m;
		}
		else{
			r = m;
		}
	}
	if(!v[r]) v[r] = skim(r);
	l = r;
	for(int i=l-1; i>= max(1, l-k+1); i--){
		if(!v[i]) v[i] = skim(i);
	}
	for(int i=l+1; i<=min(n, l+k-1); i++){
		if(!v[i]) v[i] = skim(i);
	}
	for(int i=max(0, l-k); i<max(l, k); i++){
		sum += v[i];
		if(sum > A * 2ll) break;
	}
	for(int i=max(1, l-k+1); i<=min(l, n-k+1); i++){
		sum += v[i+k-1]-v[i-1];
		if(sum > A * 2ll) break;
		if(sum >= A){
			for(int j=i; j<i+k; j++){
				ans.push_back(j);
			}
			answer(ans);
			return;
		}
	}
	for(int i=max(k, l-k+1); i<=min(n, l+k-1); i++){
		if(v[i] + pre > A * 2ll) break;
		if(v[i] + pre >= A){
			for(int j=1; j<k; j++){
				ans.push_back(j);
			}
			ans.push_back(i);
			answer(ans);
			return;
		}
	}
	impossible();
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 0 ms 200 KB Output is correct
7 Correct 0 ms 200 KB Output is correct
8 Correct 1 ms 200 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 0 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 0 ms 200 KB Output is correct
6 Correct 1 ms 200 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Correct 1 ms 200 KB Output is correct
9 Correct 1 ms 456 KB Output is correct
10 Correct 1 ms 456 KB Output is correct
11 Correct 1 ms 456 KB Output is correct
12 Correct 1 ms 456 KB Output is correct
13 Correct 1 ms 456 KB Output is correct
14 Correct 1 ms 456 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 456 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 968 KB Output is correct
2 Correct 1 ms 968 KB Output is correct
3 Correct 1 ms 968 KB Output is correct
4 Correct 1 ms 968 KB Output is correct
5 Correct 1 ms 968 KB Output is correct
6 Correct 1 ms 968 KB Output is correct
7 Correct 1 ms 968 KB Output is correct
8 Correct 2 ms 968 KB Output is correct
9 Correct 1 ms 1096 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 968 KB Output is correct
2 Correct 1 ms 968 KB Output is correct
3 Correct 1 ms 968 KB Output is correct
4 Correct 1 ms 968 KB Output is correct
5 Correct 1 ms 968 KB Output is correct
6 Correct 1 ms 968 KB Output is correct
7 Correct 1 ms 968 KB Output is correct
8 Correct 2 ms 968 KB Output is correct
9 Correct 1 ms 1096 KB Output is correct
10 Correct 1 ms 968 KB Output is correct
11 Correct 2 ms 968 KB Output is correct
12 Correct 1 ms 968 KB Output is correct
13 Correct 1 ms 1036 KB Output is correct
14 Correct 1 ms 968 KB Output is correct
15 Correct 1 ms 968 KB Output is correct
16 Correct 1 ms 968 KB Output is correct
17 Correct 1 ms 968 KB Output is correct
18 Correct 1 ms 968 KB Output is correct
19 Correct 2 ms 968 KB Output is correct
20 Correct 1 ms 1024 KB Output is correct
21 Correct 1 ms 968 KB Output is correct
22 Correct 1 ms 968 KB Output is correct
23 Correct 1 ms 968 KB Output is correct
24 Correct 1 ms 968 KB Output is correct
25 Correct 1 ms 968 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 968 KB Output is correct
2 Correct 1 ms 968 KB Output is correct
3 Correct 1 ms 968 KB Output is correct
4 Correct 1 ms 968 KB Output is correct
5 Correct 1 ms 968 KB Output is correct
6 Correct 1 ms 968 KB Output is correct
7 Correct 1 ms 968 KB Output is correct
8 Correct 2 ms 968 KB Output is correct
9 Correct 1 ms 1096 KB Output is correct
10 Correct 1 ms 968 KB Output is correct
11 Correct 2 ms 968 KB Output is correct
12 Correct 1 ms 968 KB Output is correct
13 Correct 1 ms 1036 KB Output is correct
14 Correct 1 ms 968 KB Output is correct
15 Correct 1 ms 968 KB Output is correct
16 Correct 1 ms 968 KB Output is correct
17 Correct 1 ms 968 KB Output is correct
18 Correct 1 ms 968 KB Output is correct
19 Correct 2 ms 968 KB Output is correct
20 Correct 1 ms 1024 KB Output is correct
21 Correct 1 ms 968 KB Output is correct
22 Correct 1 ms 968 KB Output is correct
23 Correct 1 ms 968 KB Output is correct
24 Correct 1 ms 968 KB Output is correct
25 Correct 1 ms 968 KB Output is correct
26 Correct 1 ms 968 KB Output is correct
27 Correct 1 ms 968 KB Output is correct
28 Correct 2 ms 968 KB Output is correct
29 Correct 1 ms 968 KB Output is correct
30 Correct 1 ms 968 KB Output is correct
31 Correct 1 ms 968 KB Output is correct
32 Correct 1 ms 968 KB Output is correct
33 Correct 1 ms 1088 KB Output is correct
34 Correct 1 ms 1040 KB Output is correct
35 Correct 2 ms 968 KB Output is correct
36 Correct 2 ms 968 KB Output is correct
37 Correct 1 ms 968 KB Output is correct
38 Correct 1 ms 1096 KB Output is correct
39 Correct 1 ms 968 KB Output is correct
40 Correct 1 ms 968 KB Output is correct
41 Correct 2 ms 968 KB Output is correct
42 Correct 1 ms 968 KB Output is correct
43 Correct 1 ms 968 KB Output is correct
44 Correct 2 ms 968 KB Output is correct
45 Correct 1 ms 968 KB Output is correct
46 Correct 1 ms 968 KB Output is correct
47 Correct 1 ms 968 KB Output is correct
48 Correct 1 ms 968 KB Output is correct
49 Correct 1 ms 968 KB Output is correct
50 Correct 1 ms 968 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 968 KB Output is correct
2 Correct 1 ms 968 KB Output is correct
3 Correct 1 ms 968 KB Output is correct
4 Correct 1 ms 968 KB Output is correct
5 Correct 1 ms 968 KB Output is correct
6 Correct 1 ms 968 KB Output is correct
7 Correct 1 ms 968 KB Output is correct
8 Correct 2 ms 968 KB Output is correct
9 Correct 1 ms 1096 KB Output is correct
10 Correct 1 ms 968 KB Output is correct
11 Correct 2 ms 968 KB Output is correct
12 Correct 1 ms 968 KB Output is correct
13 Correct 1 ms 1036 KB Output is correct
14 Correct 1 ms 968 KB Output is correct
15 Correct 1 ms 968 KB Output is correct
16 Correct 1 ms 968 KB Output is correct
17 Correct 1 ms 968 KB Output is correct
18 Correct 1 ms 968 KB Output is correct
19 Correct 2 ms 968 KB Output is correct
20 Correct 1 ms 1024 KB Output is correct
21 Correct 1 ms 968 KB Output is correct
22 Correct 1 ms 968 KB Output is correct
23 Correct 1 ms 968 KB Output is correct
24 Correct 1 ms 968 KB Output is correct
25 Correct 1 ms 968 KB Output is correct
26 Correct 1 ms 968 KB Output is correct
27 Correct 1 ms 968 KB Output is correct
28 Correct 1 ms 968 KB Output is correct
29 Correct 1 ms 968 KB Output is correct
30 Correct 1 ms 1024 KB Output is correct
31 Correct 1 ms 1096 KB Output is correct
32 Correct 1 ms 968 KB Output is correct
33 Correct 1 ms 968 KB Output is correct
34 Correct 1 ms 1020 KB Output is correct
35 Correct 1 ms 968 KB Output is correct
36 Correct 1 ms 968 KB Output is correct
37 Correct 1 ms 968 KB Output is correct
38 Correct 1 ms 968 KB Output is correct
39 Correct 1 ms 968 KB Output is correct
40 Correct 1 ms 968 KB Output is correct
41 Correct 1 ms 968 KB Output is correct
42 Correct 1 ms 968 KB Output is correct
43 Correct 1 ms 968 KB Output is correct
44 Correct 1 ms 1096 KB Output is correct
45 Correct 1 ms 968 KB Output is correct
46 Correct 1 ms 968 KB Output is correct
47 Correct 1 ms 968 KB Output is correct
48 Correct 1 ms 968 KB Output is correct
49 Correct 1 ms 968 KB Output is correct
50 Correct 2 ms 968 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 968 KB Output is correct
2 Correct 1 ms 968 KB Output is correct
3 Correct 1 ms 968 KB Output is correct
4 Correct 1 ms 968 KB Output is correct
5 Correct 1 ms 968 KB Output is correct
6 Correct 1 ms 968 KB Output is correct
7 Correct 1 ms 968 KB Output is correct
8 Correct 2 ms 968 KB Output is correct
9 Correct 1 ms 1096 KB Output is correct
10 Correct 1 ms 968 KB Output is correct
11 Correct 2 ms 968 KB Output is correct
12 Correct 1 ms 968 KB Output is correct
13 Correct 1 ms 1036 KB Output is correct
14 Correct 1 ms 968 KB Output is correct
15 Correct 1 ms 968 KB Output is correct
16 Correct 1 ms 968 KB Output is correct
17 Correct 1 ms 968 KB Output is correct
18 Correct 1 ms 968 KB Output is correct
19 Correct 2 ms 968 KB Output is correct
20 Correct 1 ms 1024 KB Output is correct
21 Correct 1 ms 968 KB Output is correct
22 Correct 1 ms 968 KB Output is correct
23 Correct 1 ms 968 KB Output is correct
24 Correct 1 ms 968 KB Output is correct
25 Correct 1 ms 968 KB Output is correct
26 Correct 1 ms 968 KB Output is correct
27 Correct 1 ms 968 KB Output is correct
28 Correct 2 ms 968 KB Output is correct
29 Correct 1 ms 968 KB Output is correct
30 Correct 1 ms 968 KB Output is correct
31 Correct 1 ms 968 KB Output is correct
32 Correct 1 ms 968 KB Output is correct
33 Correct 1 ms 1088 KB Output is correct
34 Correct 1 ms 1040 KB Output is correct
35 Correct 2 ms 968 KB Output is correct
36 Correct 2 ms 968 KB Output is correct
37 Correct 1 ms 968 KB Output is correct
38 Correct 1 ms 1096 KB Output is correct
39 Correct 1 ms 968 KB Output is correct
40 Correct 1 ms 968 KB Output is correct
41 Correct 2 ms 968 KB Output is correct
42 Correct 1 ms 968 KB Output is correct
43 Correct 1 ms 968 KB Output is correct
44 Correct 2 ms 968 KB Output is correct
45 Correct 1 ms 968 KB Output is correct
46 Correct 1 ms 968 KB Output is correct
47 Correct 1 ms 968 KB Output is correct
48 Correct 1 ms 968 KB Output is correct
49 Correct 1 ms 968 KB Output is correct
50 Correct 1 ms 968 KB Output is correct
51 Correct 1 ms 968 KB Output is correct
52 Correct 1 ms 968 KB Output is correct
53 Correct 1 ms 968 KB Output is correct
54 Correct 1 ms 968 KB Output is correct
55 Correct 1 ms 1024 KB Output is correct
56 Correct 1 ms 1096 KB Output is correct
57 Correct 1 ms 968 KB Output is correct
58 Correct 1 ms 968 KB Output is correct
59 Correct 1 ms 1020 KB Output is correct
60 Correct 1 ms 968 KB Output is correct
61 Correct 1 ms 968 KB Output is correct
62 Correct 1 ms 968 KB Output is correct
63 Correct 1 ms 968 KB Output is correct
64 Correct 1 ms 968 KB Output is correct
65 Correct 1 ms 968 KB Output is correct
66 Correct 1 ms 968 KB Output is correct
67 Correct 1 ms 968 KB Output is correct
68 Correct 1 ms 968 KB Output is correct
69 Correct 1 ms 1096 KB Output is correct
70 Correct 1 ms 968 KB Output is correct
71 Correct 1 ms 968 KB Output is correct
72 Correct 1 ms 968 KB Output is correct
73 Correct 1 ms 968 KB Output is correct
74 Correct 1 ms 968 KB Output is correct
75 Correct 2 ms 968 KB Output is correct
76 Correct 1 ms 200 KB Output is correct
77 Correct 1 ms 200 KB Output is correct
78 Correct 1 ms 200 KB Output is correct
79 Correct 1 ms 200 KB Output is correct
80 Correct 1 ms 200 KB Output is correct
81 Correct 1 ms 200 KB Output is correct
82 Correct 0 ms 200 KB Output is correct
83 Correct 1 ms 200 KB Output is correct
84 Correct 1 ms 392 KB Output is correct
85 Correct 1 ms 456 KB Output is correct
86 Correct 1 ms 456 KB Output is correct
87 Correct 1 ms 404 KB Output is correct
88 Correct 1 ms 416 KB Output is correct
89 Correct 1 ms 456 KB Output is correct
90 Correct 1 ms 388 KB Output is correct
91 Correct 1 ms 408 KB Output is correct
92 Correct 1 ms 968 KB Output is correct
93 Correct 1 ms 1028 KB Output is correct
94 Correct 1 ms 1048 KB Output is correct
95 Correct 1 ms 968 KB Output is correct
96 Correct 2 ms 1052 KB Output is correct
97 Correct 1 ms 968 KB Output is correct
98 Correct 1 ms 968 KB Output is correct
99 Correct 2 ms 968 KB Output is correct
100 Correct 1 ms 968 KB Output is correct
101 Correct 1 ms 1032 KB Output is correct
102 Correct 1 ms 1068 KB Output is correct
103 Correct 1 ms 968 KB Output is correct
104 Correct 1 ms 968 KB Output is correct
105 Correct 1 ms 1056 KB Output is correct
106 Correct 2 ms 968 KB Output is correct
107 Correct 1 ms 968 KB Output is correct
108 Correct 2 ms 968 KB Output is correct
109 Correct 1 ms 968 KB Output is correct
110 Correct 2 ms 968 KB Output is correct
111 Correct 1 ms 1044 KB Output is correct
112 Correct 1 ms 1056 KB Output is correct
113 Correct 1 ms 968 KB Output is correct
114 Correct 1 ms 968 KB Output is correct
115 Correct 1 ms 968 KB Output is correct
116 Correct 1 ms 1052 KB Output is correct
117 Correct 2 ms 1088 KB Output is correct
118 Correct 1 ms 1060 KB Output is correct
119 Correct 1 ms 968 KB Output is correct
120 Correct 1 ms 1052 KB Output is correct
121 Correct 1 ms 1052 KB Output is correct
122 Correct 1 ms 968 KB Output is correct
123 Correct 1 ms 968 KB Output is correct
124 Correct 1 ms 968 KB Output is correct
125 Correct 1 ms 1048 KB Output is correct
126 Correct 1 ms 1028 KB Output is correct
127 Correct 1 ms 1032 KB Output is correct
128 Correct 2 ms 1032 KB Output is correct
129 Correct 1 ms 968 KB Output is correct
130 Correct 2 ms 968 KB Output is correct
131 Correct 1 ms 1096 KB Output is correct
132 Correct 1 ms 968 KB Output is correct
133 Correct 2 ms 968 KB Output is correct
134 Correct 2 ms 968 KB Output is correct
135 Correct 1 ms 968 KB Output is correct