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Submission #403388

# Submission time Handle Problem Language Result Execution time Memory
403388 2021-05-13T06:32:42 Z Nordway A Difficult(y) Choice (BOI21_books) C++17
100 / 100
 2 ms 448 KB 
#include <bits/stdc++.h>
#include <books.h>

#define sz(v) (int)v.size()
#define pb push_back

using namespace std;


typedef long long ll;

const int N = 1e5 + 1;

bool asked[N];

ll x[N];

ll ask (int i) {
	if (!i) return 0ll;
	if (asked[i]) return x[i];
	asked[i] = true;
	x[i] = skim(i);
	return x[i];
}

void solve(int n,int k,ll A,int s){
	for (int i = 1; i <= n; i++) {
		asked[i] = false;
	}
	// 1...k (<=10)
	ll sum = 0;
	vector <int> ans;
	for (int i = 1; i <= k; i++) {
		sum += ask(i);
		ans.pb(i);
		if (sum > A + A) impossible();
	}
	if (sum >= A) answer(ans);

	// x[R] > A (~16-17)
	int l = k + 1, r = n, R = 0;
	while (l <= r) {
		int mid = (l + r) / 2;
		if(ask(mid) <= A) l = mid + 1;
		else R = mid, r = mid - 1;
	}

	// 1...k-1 + R (0)
	if (sum - ask(k) + ask(R) >= A && sum - ask(k) + ask(R) <= A + A) {
		ans.pop_back();
		ans.pb(R);
		answer(ans);
	}
	
	// R...R-k+1 (<=10)
	
	if (!R) R = n;
	else R--;
	int j = max(R - k + 1, k + 1);
	for (int i = 1; i <= k; i++) {
		if (j > R) break;
		sum -= ask(i);
		sum += ask(j);
		ans[i - 1] = j;
		if (sum >= A && sum <= A + A) answer(ans);
		j++;
	}

	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 2 ms 200 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 1 ms 304 KB Output is correct
7 Correct 1 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 256 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 200 KB Output is correct
4 Correct 2 ms 200 KB Output is correct
5 Correct 1 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 328 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 328 KB Output is correct
12 Correct 2 ms 328 KB Output is correct
13 Correct 1 ms 200 KB Output is correct
14 Correct 1 ms 328 KB Output is correct
15 Correct 2 ms 328 KB Output is correct
16 Correct 1 ms 332 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 392 KB Output is correct
2 Correct 1 ms 388 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 372 KB Output is correct
9 Correct 1 ms 328 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 392 KB Output is correct
2 Correct 1 ms 388 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 372 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 1 ms 392 KB Output is correct
11 Correct 1 ms 388 KB Output is correct
12 Correct 1 ms 396 KB Output is correct
13 Correct 1 ms 328 KB Output is correct
14 Correct 1 ms 328 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 1 ms 328 KB Output is correct
17 Correct 1 ms 396 KB Output is correct
18 Correct 1 ms 328 KB Output is correct
19 Correct 1 ms 392 KB Output is correct
20 Correct 1 ms 328 KB Output is correct
21 Correct 1 ms 328 KB Output is correct
22 Correct 1 ms 328 KB Output is correct
23 Correct 1 ms 392 KB Output is correct
24 Correct 2 ms 400 KB Output is correct
25 Correct 1 ms 400 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 392 KB Output is correct
2 Correct 1 ms 388 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 372 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 1 ms 392 KB Output is correct
11 Correct 1 ms 388 KB Output is correct
12 Correct 1 ms 396 KB Output is correct
13 Correct 1 ms 328 KB Output is correct
14 Correct 1 ms 328 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 1 ms 328 KB Output is correct
17 Correct 1 ms 396 KB Output is correct
18 Correct 1 ms 328 KB Output is correct
19 Correct 1 ms 392 KB Output is correct
20 Correct 1 ms 328 KB Output is correct
21 Correct 1 ms 328 KB Output is correct
22 Correct 1 ms 328 KB Output is correct
23 Correct 1 ms 392 KB Output is correct
24 Correct 2 ms 400 KB Output is correct
25 Correct 1 ms 400 KB Output is correct
26 Correct 2 ms 388 KB Output is correct
27 Correct 1 ms 396 KB Output is correct
28 Correct 1 ms 328 KB Output is correct
29 Correct 1 ms 328 KB Output is correct
30 Correct 1 ms 328 KB Output is correct
31 Correct 1 ms 328 KB Output is correct
32 Correct 1 ms 328 KB Output is correct
33 Correct 1 ms 328 KB Output is correct
34 Correct 1 ms 328 KB Output is correct
35 Correct 1 ms 376 KB Output is correct
36 Correct 1 ms 380 KB Output is correct
37 Correct 1 ms 328 KB Output is correct
38 Correct 1 ms 328 KB Output is correct
39 Correct 1 ms 392 KB Output is correct
40 Correct 2 ms 400 KB Output is correct
41 Correct 1 ms 396 KB Output is correct
42 Correct 2 ms 376 KB Output is correct
43 Correct 1 ms 328 KB Output is correct
44 Correct 1 ms 328 KB Output is correct
45 Correct 1 ms 328 KB Output is correct
46 Correct 2 ms 396 KB Output is correct
47 Correct 1 ms 376 KB Output is correct
48 Correct 1 ms 328 KB Output is correct
49 Correct 2 ms 384 KB Output is correct
50 Correct 1 ms 392 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 392 KB Output is correct
2 Correct 1 ms 388 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 372 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 1 ms 392 KB Output is correct
11 Correct 1 ms 388 KB Output is correct
12 Correct 1 ms 396 KB Output is correct
13 Correct 1 ms 328 KB Output is correct
14 Correct 1 ms 328 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 1 ms 328 KB Output is correct
17 Correct 1 ms 396 KB Output is correct
18 Correct 1 ms 328 KB Output is correct
19 Correct 1 ms 392 KB Output is correct
20 Correct 1 ms 328 KB Output is correct
21 Correct 1 ms 328 KB Output is correct
22 Correct 1 ms 328 KB Output is correct
23 Correct 1 ms 392 KB Output is correct
24 Correct 2 ms 400 KB Output is correct
25 Correct 1 ms 400 KB Output is correct
26 Correct 1 ms 328 KB Output is correct
27 Correct 1 ms 380 KB Output is correct
28 Correct 1 ms 392 KB Output is correct
29 Correct 1 ms 328 KB Output is correct
30 Correct 1 ms 328 KB Output is correct
31 Correct 2 ms 328 KB Output is correct
32 Correct 1 ms 328 KB Output is correct
33 Correct 2 ms 396 KB Output is correct
34 Correct 1 ms 328 KB Output is correct
35 Correct 1 ms 388 KB Output is correct
36 Correct 1 ms 396 KB Output is correct
37 Correct 1 ms 328 KB Output is correct
38 Correct 1 ms 292 KB Output is correct
39 Correct 1 ms 400 KB Output is correct
40 Correct 1 ms 380 KB Output is correct
41 Correct 2 ms 396 KB Output is correct
42 Correct 1 ms 388 KB Output is correct
43 Correct 1 ms 328 KB Output is correct
44 Correct 1 ms 328 KB Output is correct
45 Correct 1 ms 328 KB Output is correct
46 Correct 1 ms 328 KB Output is correct
47 Correct 1 ms 380 KB Output is correct
48 Correct 1 ms 328 KB Output is correct
49 Correct 1 ms 396 KB Output is correct
50 Correct 1 ms 404 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 392 KB Output is correct
2 Correct 1 ms 388 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 372 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 1 ms 392 KB Output is correct
11 Correct 1 ms 388 KB Output is correct
12 Correct 1 ms 396 KB Output is correct
13 Correct 1 ms 328 KB Output is correct
14 Correct 1 ms 328 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 1 ms 328 KB Output is correct
17 Correct 1 ms 396 KB Output is correct
18 Correct 1 ms 328 KB Output is correct
19 Correct 1 ms 392 KB Output is correct
20 Correct 1 ms 328 KB Output is correct
21 Correct 1 ms 328 KB Output is correct
22 Correct 1 ms 328 KB Output is correct
23 Correct 1 ms 392 KB Output is correct
24 Correct 2 ms 400 KB Output is correct
25 Correct 1 ms 400 KB Output is correct
26 Correct 2 ms 388 KB Output is correct
27 Correct 1 ms 396 KB Output is correct
28 Correct 1 ms 328 KB Output is correct
29 Correct 1 ms 328 KB Output is correct
30 Correct 1 ms 328 KB Output is correct
31 Correct 1 ms 328 KB Output is correct
32 Correct 1 ms 328 KB Output is correct
33 Correct 1 ms 328 KB Output is correct
34 Correct 1 ms 328 KB Output is correct
35 Correct 1 ms 376 KB Output is correct
36 Correct 1 ms 380 KB Output is correct
37 Correct 1 ms 328 KB Output is correct
38 Correct 1 ms 328 KB Output is correct
39 Correct 1 ms 392 KB Output is correct
40 Correct 2 ms 400 KB Output is correct
41 Correct 1 ms 396 KB Output is correct
42 Correct 2 ms 376 KB Output is correct
43 Correct 1 ms 328 KB Output is correct
44 Correct 1 ms 328 KB Output is correct
45 Correct 1 ms 328 KB Output is correct
46 Correct 2 ms 396 KB Output is correct
47 Correct 1 ms 376 KB Output is correct
48 Correct 1 ms 328 KB Output is correct
49 Correct 2 ms 384 KB Output is correct
50 Correct 1 ms 392 KB Output is correct
51 Correct 1 ms 328 KB Output is correct
52 Correct 1 ms 380 KB Output is correct
53 Correct 1 ms 392 KB Output is correct
54 Correct 1 ms 328 KB Output is correct
55 Correct 1 ms 328 KB Output is correct
56 Correct 2 ms 328 KB Output is correct
57 Correct 1 ms 328 KB Output is correct
58 Correct 2 ms 396 KB Output is correct
59 Correct 1 ms 328 KB Output is correct
60 Correct 1 ms 388 KB Output is correct
61 Correct 1 ms 396 KB Output is correct
62 Correct 1 ms 328 KB Output is correct
63 Correct 1 ms 292 KB Output is correct
64 Correct 1 ms 400 KB Output is correct
65 Correct 1 ms 380 KB Output is correct
66 Correct 2 ms 396 KB Output is correct
67 Correct 1 ms 388 KB Output is correct
68 Correct 1 ms 328 KB Output is correct
69 Correct 1 ms 328 KB Output is correct
70 Correct 1 ms 328 KB Output is correct
71 Correct 1 ms 328 KB Output is correct
72 Correct 1 ms 380 KB Output is correct
73 Correct 1 ms 328 KB Output is correct
74 Correct 1 ms 396 KB Output is correct
75 Correct 1 ms 404 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 1 ms 300 KB Output is correct
83 Correct 1 ms 200 KB Output is correct
84 Correct 1 ms 332 KB Output is correct
85 Correct 1 ms 328 KB Output is correct
86 Correct 1 ms 328 KB Output is correct
87 Correct 1 ms 328 KB Output is correct
88 Correct 1 ms 200 KB Output is correct
89 Correct 2 ms 332 KB Output is correct
90 Correct 1 ms 324 KB Output is correct
91 Correct 1 ms 328 KB Output is correct
92 Correct 1 ms 392 KB Output is correct
93 Correct 1 ms 328 KB Output is correct
94 Correct 1 ms 380 KB Output is correct
95 Correct 1 ms 328 KB Output is correct
96 Correct 1 ms 328 KB Output is correct
97 Correct 1 ms 328 KB Output is correct
98 Correct 1 ms 328 KB Output is correct
99 Correct 1 ms 388 KB Output is correct
100 Correct 2 ms 328 KB Output is correct
101 Correct 1 ms 376 KB Output is correct
102 Correct 1 ms 380 KB Output is correct
103 Correct 1 ms 328 KB Output is correct
104 Correct 1 ms 328 KB Output is correct
105 Correct 1 ms 328 KB Output is correct
106 Correct 1 ms 404 KB Output is correct
107 Correct 1 ms 396 KB Output is correct
108 Correct 1 ms 384 KB Output is correct
109 Correct 1 ms 328 KB Output is correct
110 Correct 2 ms 392 KB Output is correct
111 Correct 2 ms 328 KB Output is correct
112 Correct 1 ms 392 KB Output is correct
113 Correct 1 ms 392 KB Output is correct
114 Correct 1 ms 404 KB Output is correct
115 Correct 1 ms 328 KB Output is correct
116 Correct 1 ms 380 KB Output is correct
117 Correct 1 ms 328 KB Output is correct
118 Correct 1 ms 328 KB Output is correct
119 Correct 1 ms 328 KB Output is correct
120 Correct 1 ms 328 KB Output is correct
121 Correct 1 ms 388 KB Output is correct
122 Correct 1 ms 448 KB Output is correct
123 Correct 1 ms 404 KB Output is correct
124 Correct 1 ms 404 KB Output is correct
125 Correct 1 ms 328 KB Output is correct
126 Correct 2 ms 380 KB Output is correct
127 Correct 2 ms 328 KB Output is correct
128 Correct 2 ms 380 KB Output is correct
129 Correct 1 ms 388 KB Output is correct
130 Correct 2 ms 380 KB Output is correct
131 Correct 1 ms 292 KB Output is correct
132 Correct 1 ms 276 KB Output is correct
133 Correct 2 ms 388 KB Output is correct
134 Correct 2 ms 328 KB Output is correct
135 Correct 1 ms 388 KB Output is correct