oj.uz

Submission #46516

# Submission time Handle Problem Language Result Execution time Memory
46516 2018-04-21T09:25:14 Z Bruteforceman Nice sequence (IZhO18_sequence) C++11
76 / 100
 314 ms 31948 KB 
#include "bits/stdc++.h"
using namespace std;
int N, M;
vector <int> g[400010];
int solution[400010], pref[400010];
int deg[400010];
int v[400010];

bool good(int size) {
	for(int i = 0; i <= size; i++) {
		g[i].clear();
		deg[i] = 0;
	}
	for(int i = N; i <= size; i++) {
		g[i].push_back(i - N);
		++deg[i - N];
	}
	for(int i = 0; i <= size - M; i++) {
		g[i].push_back(i + M);
		++deg[i + M];
	}
	queue <int> Q;
	for(int i = 0; i <= size; i++) {
		if(deg[i] == 0) {
			Q.push(i);
		}
	}
	int cnt = 0;
	while(!Q.empty()) {
		int x = Q.front();
		Q.pop();
		cnt++;
		for(auto i : g[x]) {
			--deg[i];
			if(deg[i] == 0) {
				Q.push(i);
			}
		}
	}
	if(cnt == size + 1) {
		return true;
	}
	return false;
}

void solve(int size) {
	for(int i = 0; i <= size; i++) {
		g[i].clear();
		deg[i] = 0;
	}
	for(int i = N; i <= size; i++) {
		g[i].push_back(i - N);
		++deg[i - N];
	}
	for(int i = 0; i <= size - M; i++) {
		g[i].push_back(i + M);
		++deg[i + M];
	}
	queue <int> Q;
	for(int i = 0; i <= size; i++) {
		if(deg[i] == 0) {
			Q.push(i);
		}
	}
	int cnt = 0;
	while(!Q.empty()) {
		int x = Q.front();
		Q.pop();
		v[cnt++] = x;
		for(auto i : g[x]) {
			--deg[i];
			if(deg[i] == 0) {
				Q.push(i);
			}
		}
	}
	if(cnt == size + 1) {
		for(int i = 0; i < cnt; i++) {
			if(v[i] == 0) {
				int cur = 0;
				for(int j = i-1; j >= 0; j--) {
					pref[v[j]] = --cur; 
				}
				cur = 0;
				for(int j = i+1; j < cnt; j++) {
					pref[v[j]] = ++cur;
				}
				break;
			}
		}
		for(int i = 1; i <= size; i++) {
			solution[i] = pref[i] - pref[i - 1];
		}
	}
}

int search(int b, int e) {
	if(b == e) {
		return b;
	}
	int m = (b + e + 1) >> 1;
	if(good(m)) return search(m, e);
	else return search(b, m - 1);
}

int main(int argc, char const *argv[])
{
	int test;
	scanf("%d", &test);
	for(int cs = 1; cs <= test; cs++) {
		scanf("%d %d", &N, &M);		
		int ans = 0;
		if(N == M) {
			ans = N-1;
		} else if (N > M) {
			int diff = N % M;
			for(int i = 0; i < M; i++) {
				ans = max(ans, (i * diff) % M);
			}
			ans += N - 1;
		} else {
			int diff = M % N;
			for(int i = 0; i < N; i++) {
				ans = max(ans, (i * diff) % N);
			}
			ans += M - 1;
		}
		solve(ans);
		printf("%d\n", ans);
		for(int i = 1; i <= ans; i++) {
			printf("%d ", solution[i]);
		}
		printf("\n");
	}
	return 0; 
}

Compilation message

sequence.cpp: In function 'int main(int, const char**)':
sequence.cpp:109:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &test);
  ~~~~~^~~~~~~~~~~~~
sequence.cpp:111:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &N, &M);  
   ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9720 KB Ok
2 Correct 11 ms 9868 KB Ok
3 Correct 12 ms 9868 KB Ok
4 Correct 10 ms 9868 KB Ok
5 Correct 12 ms 9868 KB Ok
6 Correct 10 ms 9984 KB Ok
7 Correct 11 ms 9984 KB Ok
8 Correct 9 ms 9984 KB Ok
9 Correct 9 ms 10060 KB Ok
10 Correct 9 ms 10060 KB Ok
11 Correct 9 ms 10060 KB Ok
12 Correct 11 ms 10060 KB Ok

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 10060 KB Ok
2 Correct 10 ms 10092 KB Ok
3 Correct 10 ms 10092 KB Ok
4 Correct 12 ms 10092 KB Ok
5 Correct 9 ms 10092 KB Ok
6 Correct 11 ms 10108 KB Ok
7 Correct 21 ms 10748 KB Ok
8 Correct 14 ms 10748 KB Ok
9 Correct 22 ms 10908 KB Ok
10 Correct 16 ms 10908 KB Ok

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 10908 KB Ok
2 Correct 9 ms 10908 KB Ok
3 Correct 9 ms 10908 KB Ok
4 Correct 10 ms 10908 KB Ok
5 Correct 11 ms 10908 KB Ok
6 Correct 9 ms 10908 KB Ok
7 Correct 9 ms 10908 KB Ok
8 Correct 11 ms 10908 KB Ok
9 Correct 9 ms 10908 KB Ok
10 Correct 9 ms 10908 KB Ok
11 Correct 11 ms 10908 KB Ok

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 10908 KB Ok
2 Correct 9 ms 10908 KB Ok
3 Correct 9 ms 10908 KB Ok
4 Correct 9 ms 10908 KB Ok
5 Correct 12 ms 10908 KB Ok
6 Correct 140 ms 20508 KB Ok
7 Correct 109 ms 21292 KB Ok
8 Correct 174 ms 23212 KB Ok
9 Correct 148 ms 23212 KB Ok
10 Correct 103 ms 23212 KB Ok
11 Correct 131 ms 23212 KB Ok

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9720 KB Ok
2 Correct 11 ms 9868 KB Ok
3 Correct 12 ms 9868 KB Ok
4 Correct 10 ms 9868 KB Ok
5 Correct 12 ms 9868 KB Ok
6 Correct 10 ms 9984 KB Ok
7 Correct 11 ms 9984 KB Ok
8 Correct 9 ms 9984 KB Ok
9 Correct 9 ms 10060 KB Ok
10 Correct 9 ms 10060 KB Ok
11 Correct 9 ms 10060 KB Ok
12 Correct 11 ms 10060 KB Ok
13 Correct 12 ms 10908 KB Ok
14 Correct 9 ms 10908 KB Ok
15 Correct 9 ms 10908 KB Ok
16 Correct 10 ms 10908 KB Ok
17 Correct 11 ms 10908 KB Ok
18 Correct 9 ms 10908 KB Ok
19 Correct 9 ms 10908 KB Ok
20 Correct 11 ms 10908 KB Ok
21 Correct 9 ms 10908 KB Ok
22 Correct 9 ms 10908 KB Ok
23 Correct 11 ms 10908 KB Ok
24 Correct 12 ms 23212 KB Ok
25 Correct 13 ms 23212 KB Ok
26 Correct 11 ms 23212 KB Ok
27 Correct 11 ms 23212 KB Ok
28 Correct 11 ms 23212 KB Ok
29 Correct 12 ms 23212 KB Ok
30 Correct 14 ms 23212 KB Ok
31 Correct 12 ms 23212 KB Ok
32 Correct 11 ms 23212 KB Ok
33 Correct 12 ms 23212 KB Ok
34 Correct 14 ms 23212 KB Ok
35 Correct 14 ms 23212 KB Ok
36 Correct 14 ms 23212 KB Ok
37 Correct 15 ms 23212 KB Ok
38 Correct 14 ms 23212 KB Ok
39 Correct 17 ms 23212 KB Ok
40 Correct 15 ms 23212 KB Ok
41 Correct 17 ms 23212 KB Ok
42 Correct 14 ms 23212 KB Ok
43 Correct 16 ms 23212 KB Ok

Subtask #6
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9720 KB Ok
2 Correct 11 ms 9868 KB Ok
3 Correct 12 ms 9868 KB Ok
4 Correct 10 ms 9868 KB Ok
5 Correct 12 ms 9868 KB Ok
6 Correct 10 ms 9984 KB Ok
7 Correct 11 ms 9984 KB Ok
8 Correct 9 ms 9984 KB Ok
9 Correct 9 ms 10060 KB Ok
10 Correct 9 ms 10060 KB Ok
11 Correct 9 ms 10060 KB Ok
12 Correct 11 ms 10060 KB Ok
13 Correct 9 ms 10060 KB Ok
14 Correct 10 ms 10092 KB Ok
15 Correct 10 ms 10092 KB Ok
16 Correct 12 ms 10092 KB Ok
17 Correct 9 ms 10092 KB Ok
18 Correct 11 ms 10108 KB Ok
19 Correct 21 ms 10748 KB Ok
20 Correct 14 ms 10748 KB Ok
21 Correct 22 ms 10908 KB Ok
22 Correct 16 ms 10908 KB Ok
23 Correct 12 ms 10908 KB Ok
24 Correct 9 ms 10908 KB Ok
25 Correct 9 ms 10908 KB Ok
26 Correct 10 ms 10908 KB Ok
27 Correct 11 ms 10908 KB Ok
28 Correct 9 ms 10908 KB Ok
29 Correct 9 ms 10908 KB Ok
30 Correct 11 ms 10908 KB Ok
31 Correct 9 ms 10908 KB Ok
32 Correct 9 ms 10908 KB Ok
33 Correct 11 ms 10908 KB Ok
34 Correct 12 ms 23212 KB Ok
35 Correct 13 ms 23212 KB Ok
36 Correct 11 ms 23212 KB Ok
37 Correct 11 ms 23212 KB Ok
38 Correct 11 ms 23212 KB Ok
39 Correct 12 ms 23212 KB Ok
40 Correct 14 ms 23212 KB Ok
41 Correct 12 ms 23212 KB Ok
42 Correct 11 ms 23212 KB Ok
43 Correct 12 ms 23212 KB Ok
44 Correct 14 ms 23212 KB Ok
45 Correct 14 ms 23212 KB Ok
46 Correct 14 ms 23212 KB Ok
47 Correct 15 ms 23212 KB Ok
48 Correct 14 ms 23212 KB Ok
49 Correct 17 ms 23212 KB Ok
50 Correct 15 ms 23212 KB Ok
51 Correct 17 ms 23212 KB Ok
52 Correct 14 ms 23212 KB Ok
53 Correct 16 ms 23212 KB Ok
54 Correct 83 ms 23212 KB Ok
55 Correct 96 ms 23212 KB Ok
56 Correct 100 ms 23212 KB Ok
57 Correct 73 ms 23212 KB Ok
58 Correct 87 ms 23212 KB Ok
59 Correct 89 ms 23212 KB Ok
60 Correct 82 ms 23212 KB Ok
61 Correct 91 ms 23212 KB Ok
62 Correct 96 ms 23212 KB Ok
63 Correct 78 ms 23212 KB Ok
64 Correct 91 ms 23212 KB Ok
65 Correct 88 ms 23212 KB Ok
66 Correct 81 ms 23212 KB Ok
67 Correct 84 ms 23212 KB Ok
68 Correct 83 ms 23212 KB Ok
69 Correct 196 ms 23212 KB Ok
70 Correct 219 ms 23212 KB Ok
71 Correct 167 ms 23212 KB Ok
72 Correct 192 ms 23212 KB Ok
73 Correct 212 ms 23212 KB Ok
74 Correct 153 ms 23212 KB Ok
75 Correct 193 ms 23212 KB Ok
76 Correct 234 ms 23212 KB Ok
77 Correct 152 ms 23212 KB Ok
78 Correct 314 ms 23212 KB Ok
79 Correct 200 ms 23212 KB Ok
80 Correct 223 ms 23212 KB Ok
81 Correct 194 ms 23212 KB Ok
82 Correct 197 ms 23212 KB Ok
83 Correct 162 ms 23212 KB Ok

Subtask #7
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9720 KB Ok
2 Correct 11 ms 9868 KB Ok
3 Correct 12 ms 9868 KB Ok
4 Correct 10 ms 9868 KB Ok
5 Correct 12 ms 9868 KB Ok
6 Correct 10 ms 9984 KB Ok
7 Correct 11 ms 9984 KB Ok
8 Correct 9 ms 9984 KB Ok
9 Correct 9 ms 10060 KB Ok
10 Correct 9 ms 10060 KB Ok
11 Correct 9 ms 10060 KB Ok
12 Correct 11 ms 10060 KB Ok
13 Correct 9 ms 10060 KB Ok
14 Correct 10 ms 10092 KB Ok
15 Correct 10 ms 10092 KB Ok
16 Correct 12 ms 10092 KB Ok
17 Correct 9 ms 10092 KB Ok
18 Correct 11 ms 10108 KB Ok
19 Correct 21 ms 10748 KB Ok
20 Correct 14 ms 10748 KB Ok
21 Correct 22 ms 10908 KB Ok
22 Correct 16 ms 10908 KB Ok
23 Correct 12 ms 10908 KB Ok
24 Correct 9 ms 10908 KB Ok
25 Correct 9 ms 10908 KB Ok
26 Correct 10 ms 10908 KB Ok
27 Correct 11 ms 10908 KB Ok
28 Correct 9 ms 10908 KB Ok
29 Correct 9 ms 10908 KB Ok
30 Correct 11 ms 10908 KB Ok
31 Correct 9 ms 10908 KB Ok
32 Correct 9 ms 10908 KB Ok
33 Correct 11 ms 10908 KB Ok
34 Correct 9 ms 10908 KB Ok
35 Correct 9 ms 10908 KB Ok
36 Correct 9 ms 10908 KB Ok
37 Correct 9 ms 10908 KB Ok
38 Correct 12 ms 10908 KB Ok
39 Correct 140 ms 20508 KB Ok
40 Correct 109 ms 21292 KB Ok
41 Correct 174 ms 23212 KB Ok
42 Correct 148 ms 23212 KB Ok
43 Correct 103 ms 23212 KB Ok
44 Correct 131 ms 23212 KB Ok
45 Correct 12 ms 23212 KB Ok
46 Correct 13 ms 23212 KB Ok
47 Correct 11 ms 23212 KB Ok
48 Correct 11 ms 23212 KB Ok
49 Correct 11 ms 23212 KB Ok
50 Correct 12 ms 23212 KB Ok
51 Correct 14 ms 23212 KB Ok
52 Correct 12 ms 23212 KB Ok
53 Correct 11 ms 23212 KB Ok
54 Correct 12 ms 23212 KB Ok
55 Correct 14 ms 23212 KB Ok
56 Correct 14 ms 23212 KB Ok
57 Correct 14 ms 23212 KB Ok
58 Correct 15 ms 23212 KB Ok
59 Correct 14 ms 23212 KB Ok
60 Correct 17 ms 23212 KB Ok
61 Correct 15 ms 23212 KB Ok
62 Correct 17 ms 23212 KB Ok
63 Correct 14 ms 23212 KB Ok
64 Correct 16 ms 23212 KB Ok
65 Correct 83 ms 23212 KB Ok
66 Correct 96 ms 23212 KB Ok
67 Correct 100 ms 23212 KB Ok
68 Correct 73 ms 23212 KB Ok
69 Correct 87 ms 23212 KB Ok
70 Correct 89 ms 23212 KB Ok
71 Correct 82 ms 23212 KB Ok
72 Correct 91 ms 23212 KB Ok
73 Correct 96 ms 23212 KB Ok
74 Correct 78 ms 23212 KB Ok
75 Correct 91 ms 23212 KB Ok
76 Correct 88 ms 23212 KB Ok
77 Correct 81 ms 23212 KB Ok
78 Correct 84 ms 23212 KB Ok
79 Correct 83 ms 23212 KB Ok
80 Correct 196 ms 23212 KB Ok
81 Correct 219 ms 23212 KB Ok
82 Correct 167 ms 23212 KB Ok
83 Correct 192 ms 23212 KB Ok
84 Correct 212 ms 23212 KB Ok
85 Correct 153 ms 23212 KB Ok
86 Correct 193 ms 23212 KB Ok
87 Correct 234 ms 23212 KB Ok
88 Correct 152 ms 23212 KB Ok
89 Correct 314 ms 23212 KB Ok
90 Correct 200 ms 23212 KB Ok
91 Correct 223 ms 23212 KB Ok
92 Correct 194 ms 23212 KB Ok
93 Correct 197 ms 23212 KB Ok
94 Correct 162 ms 23212 KB Ok
95 Correct 198 ms 24760 KB Ok
96 Incorrect 304 ms 31948 KB All the numbers must be nonzero
97 Halted 0 ms 0 KB -