oj.uz

Submission #908762

# Submission time Handle Problem Language Result Execution time Memory
908762 2024-01-16T19:33:45 Z amirhoseinfar1385 Amusement Park (CEOI19_amusementpark) C++17
63 / 100
 52 ms 16208 KB 
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")
#include<bits/stdc++.h>
using namespace std;
const int maxn=18,maxm=387420489,mod=998244353;
int pd[maxm],t[(1<<maxn)],mar;
long long mypow(long long m,long long y){
    if(y==0){
        return 1;
    }
    long long p=mypow(m,(y>>1));
    p*=p;
    p%=mod;
    if(y&1){
        p*=m;
        p%=mod;
    }
    return p;
}

int ww(int a){
	if(a>=mod){
		a-=mod;
	}
	return a;
}

pair<int,int>tab2(int a){
	int now=0;
	pair<int,int>ret=make_pair(0,0);
	while(a!=0){
		if(a%3==1){
			ret.first+=(1<<now);
		}else if(a%3==2){
			ret.second+=(1<<now);
		}
		now++;
		a/=3;
	}
	return ret;
}

int back3(int a,int b){
	int ret=t[a]+2*t[b];
	return ret;
}
vector<int>tartib[maxn];
int adj[maxn],adja[maxn];
int n,m;

void aval(){
	mar=(1<<n)-1;
	int nx=1;
	for(int i=0;i<(1<<n);i++){
		int now=1,ret=0;
		for(int j=0;j<n;j++){
			if((i>>j)&1){
				ret+=now;
			}
			now*=3;
		}
		t[i]=ret;
		tartib[__builtin_popcount(i)].push_back(i);
	}
}

void solve(){
	for(int i=0;i<maxn;i++){
		for(auto xx:tartib[i]){
			for(int y=(mar^xx);y>0;y=(y-1)&(mar^xx)){
			int x=back3(xx,y);
			if(pd[x]==0){
				continue;
			}
			pair<int,int>now=make_pair(xx,y);
			for(int j=0;j<n;j++){
				if((now.second>>j)&1){
					now.second^=(1<<j);
					pair<int,int>fake=now;
					fake.first|=(1<<j);
					fake.second|=(adj[j]^(adj[j]&now.first));
					int tof=back3(fake.first,fake.second);
					pd[tof]+=pd[x];
					pd[tof]=ww(pd[tof]);
				}
			}
			}
		}
	}
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin>>n>>m;
	aval();	
	if(n>15){
		return 0;
	}
	for(int i=0;i<m;i++){
		int u,v;
		cin>>u>>v;
		u--;
		v--;
		adj[u]|=(1<<v);
		adj[v]|=(1<<u);
		adja[u]|=(1<<v);
	}
	pd[back3(0,(1<<n)-1)]=1;
	solve();
	int res=back3((1<<n)-1,0);
	pd[res]=1ll*pd[res]*m%mod;
	pd[res]=1ll*pd[res]*mypow(2,mod-2)%mod;
	cout<<pd[res]<<"\n";
}

Compilation message

amusementpark.cpp: In function 'void aval()':
amusementpark.cpp:53:6: warning: unused variable 'nx' [-Wunused-variable]
   53 |  int nx=1;
      |      ^~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2520 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2520 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 1 ms 2392 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct
21 Correct 1 ms 2392 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2392 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2520 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 1 ms 2392 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct
21 Correct 1 ms 2392 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2392 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 2 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2392 KB Output is correct
32 Correct 1 ms 2392 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 1 ms 2392 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2392 KB Output is correct
40 Correct 1 ms 2392 KB Output is correct
41 Correct 1 ms 2396 KB Output is correct
42 Correct 1 ms 2396 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2392 KB Output is correct
45 Correct 1 ms 2392 KB Output is correct
46 Correct 1 ms 2396 KB Output is correct
47 Correct 1 ms 2396 KB Output is correct
48 Correct 1 ms 2396 KB Output is correct
49 Correct 1 ms 2396 KB Output is correct
50 Correct 1 ms 2396 KB Output is correct
51 Correct 1 ms 2396 KB Output is correct
52 Correct 1 ms 2396 KB Output is correct
53 Correct 1 ms 2396 KB Output is correct
54 Correct 1 ms 2396 KB Output is correct
55 Correct 2 ms 2904 KB Output is correct
56 Correct 1 ms 2396 KB Output is correct
57 Correct 1 ms 2396 KB Output is correct
58 Correct 1 ms 2396 KB Output is correct
59 Correct 1 ms 2396 KB Output is correct
60 Correct 1 ms 2396 KB Output is correct
61 Correct 1 ms 2396 KB Output is correct
62 Correct 1 ms 2396 KB Output is correct
63 Correct 1 ms 2392 KB Output is correct
64 Correct 1 ms 2392 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2520 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 1 ms 2392 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct
21 Correct 1 ms 2392 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2392 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 2 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2392 KB Output is correct
32 Correct 1 ms 2392 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 1 ms 2392 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2392 KB Output is correct
40 Correct 1 ms 2392 KB Output is correct
41 Correct 1 ms 2396 KB Output is correct
42 Correct 1 ms 2396 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2392 KB Output is correct
45 Correct 1 ms 2392 KB Output is correct
46 Correct 1 ms 2396 KB Output is correct
47 Correct 1 ms 2396 KB Output is correct
48 Correct 1 ms 2396 KB Output is correct
49 Correct 1 ms 2396 KB Output is correct
50 Correct 1 ms 2396 KB Output is correct
51 Correct 1 ms 2396 KB Output is correct
52 Correct 1 ms 2396 KB Output is correct
53 Correct 1 ms 2396 KB Output is correct
54 Correct 1 ms 2396 KB Output is correct
55 Correct 2 ms 2904 KB Output is correct
56 Correct 1 ms 2396 KB Output is correct
57 Correct 1 ms 2396 KB Output is correct
58 Correct 1 ms 2396 KB Output is correct
59 Correct 1 ms 2396 KB Output is correct
60 Correct 1 ms 2396 KB Output is correct
61 Correct 1 ms 2396 KB Output is correct
62 Correct 1 ms 2396 KB Output is correct
63 Correct 1 ms 2392 KB Output is correct
64 Correct 1 ms 2392 KB Output is correct
65 Correct 15 ms 5980 KB Output is correct
66 Correct 16 ms 6748 KB Output is correct
67 Correct 14 ms 5724 KB Output is correct
68 Correct 15 ms 5724 KB Output is correct
69 Correct 10 ms 4956 KB Output is correct
70 Correct 10 ms 5160 KB Output is correct
71 Correct 12 ms 4700 KB Output is correct
72 Correct 10 ms 4444 KB Output is correct
73 Correct 11 ms 4956 KB Output is correct
74 Correct 10 ms 4888 KB Output is correct
75 Correct 10 ms 4444 KB Output is correct
76 Correct 10 ms 4184 KB Output is correct
77 Correct 42 ms 16208 KB Output is correct
78 Correct 44 ms 14428 KB Output is correct
79 Correct 45 ms 14424 KB Output is correct
80 Correct 39 ms 11988 KB Output is correct
81 Correct 52 ms 12184 KB Output is correct
82 Correct 51 ms 11776 KB Output is correct
83 Correct 38 ms 9052 KB Output is correct
84 Correct 32 ms 8148 KB Output is correct
85 Correct 26 ms 8528 KB Output is correct
86 Correct 28 ms 8796 KB Output is correct
87 Correct 28 ms 8204 KB Output is correct
88 Correct 28 ms 7028 KB Output is correct
89 Correct 28 ms 8532 KB Output is correct
90 Correct 29 ms 8028 KB Output is correct
91 Correct 28 ms 7772 KB Output is correct
92 Correct 28 ms 7004 KB Output is correct

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2520 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 1 ms 2392 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2392 KB Output is correct
21 Correct 1 ms 2392 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 1 ms 2392 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 2 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 1 ms 2396 KB Output is correct
31 Correct 1 ms 2392 KB Output is correct
32 Correct 1 ms 2392 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 1 ms 2392 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2392 KB Output is correct
40 Correct 1 ms 2392 KB Output is correct
41 Correct 1 ms 2396 KB Output is correct
42 Correct 1 ms 2396 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2392 KB Output is correct
45 Correct 1 ms 2392 KB Output is correct
46 Correct 1 ms 2396 KB Output is correct
47 Correct 1 ms 2396 KB Output is correct
48 Correct 1 ms 2396 KB Output is correct
49 Correct 1 ms 2396 KB Output is correct
50 Correct 1 ms 2396 KB Output is correct
51 Correct 1 ms 2396 KB Output is correct
52 Correct 1 ms 2396 KB Output is correct
53 Correct 1 ms 2396 KB Output is correct
54 Correct 1 ms 2396 KB Output is correct
55 Correct 2 ms 2904 KB Output is correct
56 Correct 1 ms 2396 KB Output is correct
57 Correct 1 ms 2396 KB Output is correct
58 Correct 1 ms 2396 KB Output is correct
59 Correct 1 ms 2396 KB Output is correct
60 Correct 1 ms 2396 KB Output is correct
61 Correct 1 ms 2396 KB Output is correct
62 Correct 1 ms 2396 KB Output is correct
63 Correct 1 ms 2392 KB Output is correct
64 Correct 1 ms 2392 KB Output is correct
65 Correct 15 ms 5980 KB Output is correct
66 Correct 16 ms 6748 KB Output is correct
67 Correct 14 ms 5724 KB Output is correct
68 Correct 15 ms 5724 KB Output is correct
69 Correct 10 ms 4956 KB Output is correct
70 Correct 10 ms 5160 KB Output is correct
71 Correct 12 ms 4700 KB Output is correct
72 Correct 10 ms 4444 KB Output is correct
73 Correct 11 ms 4956 KB Output is correct
74 Correct 10 ms 4888 KB Output is correct
75 Correct 10 ms 4444 KB Output is correct
76 Correct 10 ms 4184 KB Output is correct
77 Correct 42 ms 16208 KB Output is correct
78 Correct 44 ms 14428 KB Output is correct
79 Correct 45 ms 14424 KB Output is correct
80 Correct 39 ms 11988 KB Output is correct
81 Correct 52 ms 12184 KB Output is correct
82 Correct 51 ms 11776 KB Output is correct
83 Correct 38 ms 9052 KB Output is correct
84 Correct 32 ms 8148 KB Output is correct
85 Correct 26 ms 8528 KB Output is correct
86 Correct 28 ms 8796 KB Output is correct
87 Correct 28 ms 8204 KB Output is correct
88 Correct 28 ms 7028 KB Output is correct
89 Correct 28 ms 8532 KB Output is correct
90 Correct 29 ms 8028 KB Output is correct
91 Correct 28 ms 7772 KB Output is correct
92 Correct 28 ms 7004 KB Output is correct
93 Runtime error 36 ms 6352 KB Execution killed with signal 11
94 Halted 0 ms 0 KB -