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Submission #577107

# Submission time Handle Problem Language Result Execution time Memory
577107 2022-06-14T05:47:01 Z goodluck2020 Brunhilda’s Birthday (BOI13_brunhilda) C++14
100 / 100
 244 ms 80264 KB 
#define INPFILE "GROUP.INP"
#define OUTFILE "GROUP.OUT"

#include <bits/stdc++.h>
using namespace std;
bool maximise(int &a, int b) { return a < b ? a = b, true : false; }

const int MAX = 1e7 + 1, INF = 0x3f3f3f3f;

int n, Q, rmax[MAX], f[MAX];
bool used[MAX];
void input(void) {
	cin >> n >> Q;

	memset(rmax, 0, sizeof rmax);
	for (int i = 1; i <= n; i++) {
		int x; cin >> x;
		if (used[x]) continue;

		for (int j = x - 1; j < MAX; j += x)
			maximise(rmax[j], x - 1);

		maximise(rmax[MAX - 1], (MAX - 1) % x);
	}

	for (int i = MAX - 2; i >= 0; i--)
		maximise(rmax[i], rmax[i + 1] - 1);
}

int main(void) {
	if (fopen(INPFILE, "r")) {
		freopen(INPFILE, "r", stdin);
		freopen(OUTFILE, "w", stdout);
	}

	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

	input();

	memset(f, 0x3f, sizeof f); f[0] = 0;
	for (int i = 1; i < MAX; i++)
		f[i] = f[i - rmax[i]] + 1;

	while (Q--) {
		int x; cin >> x;
		int ans = f[x];

		if (ans >= INF) cout << "oo\n";
		else cout << ans << '\n';
	}

	return 0;
}

Compilation message

brunhilda.cpp: In function 'int main()':
brunhilda.cpp:32:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |   freopen(INPFILE, "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
brunhilda.cpp:33:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |   freopen(OUTFILE, "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 78540 KB Output is correct
2 Correct 87 ms 78492 KB Output is correct
3 Correct 82 ms 78500 KB Output is correct
4 Correct 74 ms 78532 KB Output is correct
5 Correct 85 ms 78492 KB Output is correct
6 Correct 78 ms 78596 KB Output is correct
7 Correct 99 ms 78540 KB Output is correct
8 Correct 87 ms 78488 KB Output is correct
9 Correct 103 ms 78488 KB Output is correct
10 Correct 113 ms 78508 KB Output is correct
11 Correct 106 ms 78532 KB Output is correct
12 Correct 72 ms 78540 KB Output is correct
13 Correct 189 ms 78540 KB Output is correct
14 Correct 173 ms 78536 KB Output is correct
15 Correct 97 ms 78488 KB Output is correct
16 Correct 90 ms 78488 KB Output is correct
17 Correct 94 ms 78664 KB Output is correct
18 Correct 72 ms 78548 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 78676 KB Output is correct
2 Correct 101 ms 79276 KB Output is correct
3 Correct 210 ms 78964 KB Output is correct
4 Correct 97 ms 78508 KB Output is correct
5 Correct 151 ms 78932 KB Output is correct
6 Correct 91 ms 78528 KB Output is correct
7 Correct 81 ms 78668 KB Output is correct
8 Correct 95 ms 78596 KB Output is correct
9 Correct 170 ms 79088 KB Output is correct
10 Correct 220 ms 78968 KB Output is correct
11 Correct 200 ms 78792 KB Output is correct
12 Correct 120 ms 78500 KB Output is correct
13 Correct 78 ms 78608 KB Output is correct
14 Correct 106 ms 78668 KB Output is correct
15 Correct 176 ms 78848 KB Output is correct
16 Correct 98 ms 79188 KB Output is correct
17 Correct 172 ms 78504 KB Output is correct
18 Correct 178 ms 79432 KB Output is correct

Subtask #3
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 181 ms 79308 KB Output is correct
2 Correct 216 ms 79180 KB Output is correct
3 Correct 215 ms 79428 KB Output is correct
4 Correct 150 ms 79432 KB Output is correct
5 Correct 118 ms 80264 KB Output is correct
6 Correct 185 ms 79688 KB Output is correct
7 Correct 179 ms 79816 KB Output is correct
8 Correct 176 ms 79304 KB Output is correct
9 Correct 180 ms 79240 KB Output is correct
10 Correct 143 ms 78664 KB Output is correct
11 Correct 127 ms 78788 KB Output is correct
12 Correct 170 ms 78804 KB Output is correct
13 Correct 206 ms 79696 KB Output is correct
14 Correct 142 ms 79812 KB Output is correct
15 Correct 171 ms 78788 KB Output is correct
16 Correct 189 ms 78796 KB Output is correct
17 Correct 187 ms 79116 KB Output is correct
18 Correct 244 ms 79108 KB Output is correct
19 Correct 86 ms 78732 KB Output is correct
20 Correct 212 ms 79432 KB Output is correct
21 Correct 163 ms 80004 KB Output is correct
22 Correct 232 ms 80204 KB Output is correct
23 Correct 116 ms 79820 KB Output is correct
24 Correct 109 ms 79564 KB Output is correct
25 Correct 157 ms 79556 KB Output is correct
26 Correct 142 ms 79432 KB Output is correct
27 Correct 234 ms 79752 KB Output is correct
28 Correct 99 ms 79728 KB Output is correct
29 Correct 234 ms 80208 KB Output is correct
30 Correct 198 ms 80016 KB Output is correct
31 Correct 117 ms 79688 KB Output is correct
32 Correct 123 ms 79556 KB Output is correct
33 Correct 110 ms 79460 KB Output is correct
34 Correct 176 ms 79860 KB Output is correct
35 Correct 108 ms 79600 KB Output is correct
36 Correct 228 ms 80200 KB Output is correct
37 Correct 128 ms 80244 KB Output is correct
38 Correct 196 ms 79628 KB Output is correct
39 Correct 113 ms 79692 KB Output is correct
40 Correct 161 ms 79556 KB Output is correct
41 Correct 153 ms 79816 KB Output is correct
42 Correct 202 ms 79688 KB Output is correct