oj.uz

Submission #1083613

# Submission time Handle Problem Language Result Execution time Memory
1083613 2024-09-03T15:11:39 Z doducanh Amusement Park (CEOI19_amusementpark) C++14
100 / 100
 2308 ms 2924 KB 
///breaker
#pragma GCC optimize("O3")
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define fi first
#define se second
#define ii pair<int,int>
#define mp make_pair
#define in(x) freopen(x,"r",stdin)
#define out(x) freopen(x,"w",stdout)
#define bit(x,i) ((x>>i)&1)
#define lc (id<<1)
#define rc ((id<<1)^1)
const int mod=998244353;
bool independ[(1<<20)];
int a[20];
ll f[(1<<20)];
int nodeid[(1<<20)];
int n,m;
ll Pow(ll a,ll b)
{
    ll res=1;
    for(;b;b/=2,a=(a*a)%mod)if(b&1)res=(res*a)%mod;
    return res;
}
void sol(void){
    cin>>n>>m;
    for(int i=1;i<=m;i++){
        int u,v;
        cin>>u>>v;
        u--;
        v--;
        a[u]|=(1<<v);
        a[v]|=(1<<u);
    }
    for(int i=0;i<n;i++)nodeid[(1<<i)]=i;
    independ[0]=1;
    for(int i=1;i<(1<<n);i++){
        if(independ[(i&(i-1))]&&(a[nodeid[(i&(-i))]]&(i&(i-1)))==0){
            independ[i]=1;
        }
    }
    f[0]=1;
    for(int i=1;i<(1<<n);i++){
        for(int j=i;j;j=((j-1)&i)){
            if(independ[j]){
                int tmp=(((__builtin_popcount(j)+1)&1)?-1:1);
                f[i]=(f[i]+tmp*f[i^j]+mod)%mod;
            }
        }
    }
    cout<<(1ll*m*f[(1<<n)-1]%mod*Pow(2,mod-2))%mod;
}
signed main(void)
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int t=1;
    while(t--){
        sol();
    }
    // you should actually read the stuff at the bottom
    return 0;
}
/* stuff you should look for
 * int overflow, array bounds
 * special cases (n=1?)
 * do smth instead of nothing and stay organized
 * WRITE STUFF DOWN
 * DON'T GET STUCK ON ONE APPROACH
 */

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 440 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 416 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 440 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 416 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 600 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 440 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 416 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 600 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 344 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 1 ms 344 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 1 ms 348 KB Output is correct
50 Correct 1 ms 344 KB Output is correct
51 Correct 1 ms 348 KB Output is correct
52 Correct 1 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 1 ms 348 KB Output is correct
55 Correct 1 ms 344 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 1 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 1 ms 348 KB Output is correct
62 Correct 1 ms 348 KB Output is correct
63 Correct 1 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 440 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 416 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 600 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 344 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 1 ms 344 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 1 ms 348 KB Output is correct
50 Correct 1 ms 344 KB Output is correct
51 Correct 1 ms 348 KB Output is correct
52 Correct 1 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 1 ms 348 KB Output is correct
55 Correct 1 ms 344 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 1 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 1 ms 348 KB Output is correct
62 Correct 1 ms 348 KB Output is correct
63 Correct 1 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 9 ms 632 KB Output is correct
66 Correct 9 ms 604 KB Output is correct
67 Correct 9 ms 604 KB Output is correct
68 Correct 8 ms 604 KB Output is correct
69 Correct 21 ms 588 KB Output is correct
70 Correct 14 ms 600 KB Output is correct
71 Correct 15 ms 604 KB Output is correct
72 Correct 16 ms 600 KB Output is correct
73 Correct 10 ms 604 KB Output is correct
74 Correct 11 ms 568 KB Output is correct
75 Correct 13 ms 628 KB Output is correct
76 Correct 14 ms 604 KB Output is correct
77 Correct 26 ms 700 KB Output is correct
78 Correct 25 ms 548 KB Output is correct
79 Correct 23 ms 732 KB Output is correct
80 Correct 24 ms 604 KB Output is correct
81 Correct 21 ms 664 KB Output is correct
82 Correct 20 ms 668 KB Output is correct
83 Correct 19 ms 604 KB Output is correct
84 Correct 22 ms 604 KB Output is correct
85 Correct 63 ms 764 KB Output is correct
86 Correct 39 ms 596 KB Output is correct
87 Correct 44 ms 600 KB Output is correct
88 Correct 47 ms 732 KB Output is correct
89 Correct 33 ms 600 KB Output is correct
90 Correct 37 ms 604 KB Output is correct
91 Correct 34 ms 600 KB Output is correct
92 Correct 37 ms 604 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 440 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 416 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 600 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 344 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 1 ms 344 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 1 ms 348 KB Output is correct
50 Correct 1 ms 344 KB Output is correct
51 Correct 1 ms 348 KB Output is correct
52 Correct 1 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 1 ms 348 KB Output is correct
55 Correct 1 ms 344 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 1 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 1 ms 348 KB Output is correct
62 Correct 1 ms 348 KB Output is correct
63 Correct 1 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 9 ms 632 KB Output is correct
66 Correct 9 ms 604 KB Output is correct
67 Correct 9 ms 604 KB Output is correct
68 Correct 8 ms 604 KB Output is correct
69 Correct 21 ms 588 KB Output is correct
70 Correct 14 ms 600 KB Output is correct
71 Correct 15 ms 604 KB Output is correct
72 Correct 16 ms 600 KB Output is correct
73 Correct 10 ms 604 KB Output is correct
74 Correct 11 ms 568 KB Output is correct
75 Correct 13 ms 628 KB Output is correct
76 Correct 14 ms 604 KB Output is correct
77 Correct 26 ms 700 KB Output is correct
78 Correct 25 ms 548 KB Output is correct
79 Correct 23 ms 732 KB Output is correct
80 Correct 24 ms 604 KB Output is correct
81 Correct 21 ms 664 KB Output is correct
82 Correct 20 ms 668 KB Output is correct
83 Correct 19 ms 604 KB Output is correct
84 Correct 22 ms 604 KB Output is correct
85 Correct 63 ms 764 KB Output is correct
86 Correct 39 ms 596 KB Output is correct
87 Correct 44 ms 600 KB Output is correct
88 Correct 47 ms 732 KB Output is correct
89 Correct 33 ms 600 KB Output is correct
90 Correct 37 ms 604 KB Output is correct
91 Correct 34 ms 600 KB Output is correct
92 Correct 37 ms 604 KB Output is correct
93 Correct 1085 ms 2644 KB Output is correct
94 Correct 1106 ms 2776 KB Output is correct
95 Correct 1098 ms 2736 KB Output is correct
96 Correct 853 ms 2648 KB Output is correct
97 Correct 731 ms 2640 KB Output is correct
98 Correct 825 ms 2924 KB Output is correct
99 Correct 82 ms 852 KB Output is correct
100 Correct 73 ms 848 KB Output is correct
101 Correct 69 ms 852 KB Output is correct
102 Correct 74 ms 948 KB Output is correct
103 Correct 785 ms 1548 KB Output is correct
104 Correct 397 ms 1516 KB Output is correct
105 Correct 288 ms 1364 KB Output is correct
106 Correct 211 ms 1456 KB Output is correct
107 Correct 2308 ms 2560 KB Output is correct
108 Correct 822 ms 2644 KB Output is correct
109 Correct 616 ms 2640 KB Output is correct
110 Correct 554 ms 2596 KB Output is correct
111 Correct 58 ms 852 KB Output is correct
112 Correct 57 ms 856 KB Output is correct
113 Correct 58 ms 856 KB Output is correct
114 Correct 176 ms 1060 KB Output is correct
115 Correct 122 ms 916 KB Output is correct
116 Correct 130 ms 852 KB Output is correct
117 Correct 139 ms 848 KB Output is correct
118 Correct 85 ms 848 KB Output is correct
119 Correct 92 ms 808 KB Output is correct
120 Correct 101 ms 1016 KB Output is correct
121 Correct 111 ms 852 KB Output is correct
122 Correct 195 ms 1412 KB Output is correct
123 Correct 169 ms 1704 KB Output is correct
124 Correct 167 ms 1616 KB Output is correct
125 Correct 161 ms 1360 KB Output is correct
126 Correct 152 ms 1364 KB Output is correct
127 Correct 155 ms 1620 KB Output is correct
128 Correct 171 ms 1328 KB Output is correct
129 Correct 138 ms 1360 KB Output is correct
130 Correct 136 ms 1304 KB Output is correct
131 Correct 516 ms 1612 KB Output is correct
132 Correct 356 ms 1448 KB Output is correct
133 Correct 387 ms 1364 KB Output is correct
134 Correct 421 ms 1508 KB Output is correct
135 Correct 261 ms 1576 KB Output is correct
136 Correct 272 ms 1360 KB Output is correct
137 Correct 313 ms 1620 KB Output is correct
138 Correct 321 ms 1520 KB Output is correct
139 Correct 207 ms 1464 KB Output is correct
140 Correct 242 ms 1604 KB Output is correct
141 Correct 261 ms 1468 KB Output is correct
142 Correct 484 ms 2592 KB Output is correct
143 Correct 472 ms 2612 KB Output is correct
144 Correct 471 ms 2584 KB Output is correct
145 Correct 445 ms 2448 KB Output is correct
146 Correct 442 ms 2436 KB Output is correct
147 Correct 400 ms 2384 KB Output is correct
148 Correct 500 ms 2384 KB Output is correct
149 Correct 487 ms 2592 KB Output is correct
150 Correct 500 ms 2384 KB Output is correct
151 Correct 623 ms 2384 KB Output is correct
152 Correct 641 ms 2388 KB Output is correct
153 Correct 809 ms 2620 KB Output is correct
154 Correct 812 ms 2640 KB Output is correct
155 Correct 916 ms 2644 KB Output is correct
156 Correct 991 ms 2384 KB Output is correct
157 Correct 887 ms 2640 KB Output is correct
158 Correct 899 ms 2612 KB Output is correct
159 Correct 644 ms 2756 KB Output is correct
160 Correct 694 ms 2388 KB Output is correct
161 Correct 781 ms 2396 KB Output is correct
162 Correct 547 ms 2728 KB Output is correct
163 Correct 549 ms 2636 KB Output is correct
164 Correct 576 ms 2760 KB Output is correct
165 Correct 588 ms 2384 KB Output is correct
166 Correct 619 ms 2384 KB Output is correct
167 Correct 672 ms 2500 KB Output is correct