oj.uz

Submission #259950

# Submission time Handle Problem Language Result Execution time Memory
259950 2020-08-08T20:51:37 Z MarcoMeijer Amusement Park (CEOI19_amusementpark) C++14
63 / 100
 3000 ms 661340 KB 
#include <bits/stdc++.h>
using namespace std;

// macros
typedef long long ll;
typedef long double ld;
typedef pair<int, int> ii;
typedef pair<ll, ll> lll;
typedef tuple<int, int, int> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<iii> viii;
typedef vector<ll> vll;
typedef vector<lll> vlll;
#define REP(a,b,c) for(int a=int(b); a<int(c); a++)
#define RE(a,c) REP(a,0,c)
#define RE1(a,c) REP(a,1,c+1)
#define REI(a,b,c) REP(a,b,c+1)
#define REV(a,b,c) for(int a=int(c-1); a>=int(b); a--)
#define FOR(a,b) for(auto& a : b)
#define all(a) a.begin(), a.end()
#define INF 1e9
#define EPS 1e-9
#define pb push_back
#define popb pop_back
#define fi first
#define se second
#define sz size()

// input
template<class T> void IN(T& x) {cin >> x;}
template<class H, class... T> void IN(H& h, T&... t) {IN(h); IN(t...); }

// output
template<class T1, class T2> void OUT(const pair<T1,T2>& x);
template<class T> void OUT(const T& x) {cout << x;}
template<class H, class... T> void OUT(const H& h, const T&... t) {OUT(h); OUT(t...); }
template<class T1, class T2> void OUT(const pair<T1,T2>& x) {OUT(x.fi," ",x.se);}
template<class... T> void OUTL(const T&... t) {OUT(t..., "\n"); }

//===================//
//  Added libraries  //
//===================//

// mod library
ll MOD=998244353;

inline ll mod(ll x_) {
    return (x_)%MOD;
}
ll modpow(ll x_, ll N_) {
    if(N_ == 0) return 1;
    ll a = modpow(x_,N_/2);
    a = (a*a)%MOD;
    if(N_%2) a = (a*x_)%MOD;
    return a;
}
ll inv(ll x_) {
    return modpow(x_, MOD-2);
}
class mi {
public:
    mi(ll v=0) {value = v;}
    mi  operator+ (ll rs) {
        ll res = value+rs;
        if(res > MOD) res -= MOD;
        return res;
    }
    mi  operator- (ll rs) {return mod(value-rs+MOD);}
    mi  operator* (ll rs) {return mod(value*rs);}
    mi  operator/ (ll rs) {return mod(value*inv(rs));}
    mi& operator+=(ll rs) {*this = (*this)+rs; return *this;}
    mi& operator-=(ll rs) {*this = (*this)-rs; return *this;}
    mi& operator*=(ll rs) {*this = (*this)*rs; return *this;}
    mi& operator/=(ll rs) {*this = (*this)/rs; return *this;}
    operator ll&() {return value;}

    ll value;
};
typedef vector<mi> vmi;

//===================//
//end added libraries//
//===================//

void program();
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    program();
}


//===================//
//   begin program   //
//===================//

const int MX = (1<<18)+2;
int n, m, BIT;
vi dp[MX];
int N[18];

int compress(int b, int a) {
    int j=0, ans=0;
    RE(i,n) {
        if(a&(1<<i)) continue;
        if(b&(1<<i)) ans |= (1<<j);
        j++;
    }
    return ans;
}
void createDP(int a) {
    if(dp[a].empty()) dp[a].assign(1<<(n-__builtin_popcount(a)), 0);
}

void program() {
    IN(n,m);
    RE(i,n) N[i] = 0;
    RE(i,m) {
        int u, v;
        IN(u,v);
        u--; v--;
        N[u] |= (1<<v);
        N[v] |= (1<<u);
    }
    BIT = (1<<n);

    createDP(0);
    dp[0][BIT-1] = 1;
    RE(a,BIT) {
        int ra = ~a;
        int b = ((1<<n)-1)&ra;
        createDP(a);
        while(1) {
            mi curDP = dp[a][compress(b,a)];
            if(curDP) {
                RE(i,n) {
                    if(!(b&(1<<i))) continue;
                    int A = a|(1<<i);
                    int B = b&(~((1<<i)-1)) | (N[i]&ra);
                    createDP(A);
                    int comp = compress(B,A);
                    dp[A][comp] = mi(dp[A][comp])+curDP;
                }
            }

            if(b == 0) break;
            b = (b-1)&ra;
        }
        if(a != BIT-1) dp[a].clear();
    }
    OUTL(ll((mi)dp[BIT-1][0]*mi(m)/mi(2)));
}

Compilation message

amusementpark.cpp: In function 'void program()':
amusementpark.cpp:141:30: warning: suggest parentheses around arithmetic in operand of '|' [-Wparentheses]
                     int B = b&(~((1<<i)-1)) | (N[i]&ra);
                             ~^~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 6528 KB Output is correct
2 Correct 5 ms 6528 KB Output is correct
3 Correct 4 ms 6528 KB Output is correct
4 Correct 4 ms 6528 KB Output is correct
5 Correct 4 ms 6528 KB Output is correct
6 Correct 4 ms 6528 KB Output is correct
7 Correct 4 ms 6528 KB Output is correct
8 Correct 4 ms 6528 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 6528 KB Output is correct
2 Correct 5 ms 6528 KB Output is correct
3 Correct 4 ms 6528 KB Output is correct
4 Correct 4 ms 6528 KB Output is correct
5 Correct 4 ms 6528 KB Output is correct
6 Correct 4 ms 6528 KB Output is correct
7 Correct 4 ms 6528 KB Output is correct
8 Correct 4 ms 6528 KB Output is correct
9 Correct 5 ms 6528 KB Output is correct
10 Correct 4 ms 6528 KB Output is correct
11 Correct 4 ms 6528 KB Output is correct
12 Correct 5 ms 6528 KB Output is correct
13 Correct 4 ms 6528 KB Output is correct
14 Correct 4 ms 6528 KB Output is correct
15 Correct 4 ms 6528 KB Output is correct
16 Correct 4 ms 6528 KB Output is correct
17 Correct 4 ms 6528 KB Output is correct
18 Correct 4 ms 6528 KB Output is correct
19 Correct 4 ms 6528 KB Output is correct
20 Correct 4 ms 6528 KB Output is correct
21 Correct 4 ms 6528 KB Output is correct
22 Correct 4 ms 6528 KB Output is correct
23 Correct 4 ms 6528 KB Output is correct
24 Correct 4 ms 6528 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 6528 KB Output is correct
2 Correct 5 ms 6528 KB Output is correct
3 Correct 4 ms 6528 KB Output is correct
4 Correct 4 ms 6528 KB Output is correct
5 Correct 4 ms 6528 KB Output is correct
6 Correct 4 ms 6528 KB Output is correct
7 Correct 4 ms 6528 KB Output is correct
8 Correct 4 ms 6528 KB Output is correct
9 Correct 5 ms 6528 KB Output is correct
10 Correct 4 ms 6528 KB Output is correct
11 Correct 4 ms 6528 KB Output is correct
12 Correct 5 ms 6528 KB Output is correct
13 Correct 4 ms 6528 KB Output is correct
14 Correct 4 ms 6528 KB Output is correct
15 Correct 4 ms 6528 KB Output is correct
16 Correct 4 ms 6528 KB Output is correct
17 Correct 4 ms 6528 KB Output is correct
18 Correct 4 ms 6528 KB Output is correct
19 Correct 4 ms 6528 KB Output is correct
20 Correct 4 ms 6528 KB Output is correct
21 Correct 4 ms 6528 KB Output is correct
22 Correct 4 ms 6528 KB Output is correct
23 Correct 4 ms 6528 KB Output is correct
24 Correct 4 ms 6528 KB Output is correct
25 Correct 4 ms 6528 KB Output is correct
26 Correct 4 ms 6528 KB Output is correct
27 Correct 4 ms 6528 KB Output is correct
28 Correct 4 ms 6528 KB Output is correct
29 Correct 4 ms 6528 KB Output is correct
30 Correct 5 ms 6528 KB Output is correct
31 Correct 4 ms 6528 KB Output is correct
32 Correct 5 ms 6528 KB Output is correct
33 Correct 4 ms 6528 KB Output is correct
34 Correct 5 ms 6528 KB Output is correct
35 Correct 5 ms 6528 KB Output is correct
36 Correct 5 ms 6528 KB Output is correct
37 Correct 6 ms 6528 KB Output is correct
38 Correct 5 ms 6528 KB Output is correct
39 Correct 6 ms 6528 KB Output is correct
40 Correct 6 ms 6528 KB Output is correct
41 Correct 5 ms 6528 KB Output is correct
42 Correct 6 ms 6528 KB Output is correct
43 Correct 6 ms 6528 KB Output is correct
44 Correct 6 ms 6560 KB Output is correct
45 Correct 6 ms 6528 KB Output is correct
46 Correct 6 ms 6528 KB Output is correct
47 Correct 4 ms 6528 KB Output is correct
48 Correct 5 ms 6528 KB Output is correct
49 Correct 6 ms 6528 KB Output is correct
50 Correct 5 ms 6528 KB Output is correct
51 Correct 5 ms 6528 KB Output is correct
52 Correct 9 ms 6784 KB Output is correct
53 Correct 8 ms 6784 KB Output is correct
54 Correct 8 ms 6784 KB Output is correct
55 Correct 8 ms 6784 KB Output is correct
56 Correct 9 ms 6784 KB Output is correct
57 Correct 8 ms 6784 KB Output is correct
58 Correct 6 ms 6784 KB Output is correct
59 Correct 8 ms 6784 KB Output is correct
60 Correct 8 ms 6784 KB Output is correct
61 Correct 8 ms 6784 KB Output is correct
62 Correct 8 ms 6784 KB Output is correct
63 Correct 8 ms 6784 KB Output is correct
64 Correct 8 ms 6784 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 6528 KB Output is correct
2 Correct 5 ms 6528 KB Output is correct
3 Correct 4 ms 6528 KB Output is correct
4 Correct 4 ms 6528 KB Output is correct
5 Correct 4 ms 6528 KB Output is correct
6 Correct 4 ms 6528 KB Output is correct
7 Correct 4 ms 6528 KB Output is correct
8 Correct 4 ms 6528 KB Output is correct
9 Correct 5 ms 6528 KB Output is correct
10 Correct 4 ms 6528 KB Output is correct
11 Correct 4 ms 6528 KB Output is correct
12 Correct 5 ms 6528 KB Output is correct
13 Correct 4 ms 6528 KB Output is correct
14 Correct 4 ms 6528 KB Output is correct
15 Correct 4 ms 6528 KB Output is correct
16 Correct 4 ms 6528 KB Output is correct
17 Correct 4 ms 6528 KB Output is correct
18 Correct 4 ms 6528 KB Output is correct
19 Correct 4 ms 6528 KB Output is correct
20 Correct 4 ms 6528 KB Output is correct
21 Correct 4 ms 6528 KB Output is correct
22 Correct 4 ms 6528 KB Output is correct
23 Correct 4 ms 6528 KB Output is correct
24 Correct 4 ms 6528 KB Output is correct
25 Correct 4 ms 6528 KB Output is correct
26 Correct 4 ms 6528 KB Output is correct
27 Correct 4 ms 6528 KB Output is correct
28 Correct 4 ms 6528 KB Output is correct
29 Correct 4 ms 6528 KB Output is correct
30 Correct 5 ms 6528 KB Output is correct
31 Correct 4 ms 6528 KB Output is correct
32 Correct 5 ms 6528 KB Output is correct
33 Correct 4 ms 6528 KB Output is correct
34 Correct 5 ms 6528 KB Output is correct
35 Correct 5 ms 6528 KB Output is correct
36 Correct 5 ms 6528 KB Output is correct
37 Correct 6 ms 6528 KB Output is correct
38 Correct 5 ms 6528 KB Output is correct
39 Correct 6 ms 6528 KB Output is correct
40 Correct 6 ms 6528 KB Output is correct
41 Correct 5 ms 6528 KB Output is correct
42 Correct 6 ms 6528 KB Output is correct
43 Correct 6 ms 6528 KB Output is correct
44 Correct 6 ms 6560 KB Output is correct
45 Correct 6 ms 6528 KB Output is correct
46 Correct 6 ms 6528 KB Output is correct
47 Correct 4 ms 6528 KB Output is correct
48 Correct 5 ms 6528 KB Output is correct
49 Correct 6 ms 6528 KB Output is correct
50 Correct 5 ms 6528 KB Output is correct
51 Correct 5 ms 6528 KB Output is correct
52 Correct 9 ms 6784 KB Output is correct
53 Correct 8 ms 6784 KB Output is correct
54 Correct 8 ms 6784 KB Output is correct
55 Correct 8 ms 6784 KB Output is correct
56 Correct 9 ms 6784 KB Output is correct
57 Correct 8 ms 6784 KB Output is correct
58 Correct 6 ms 6784 KB Output is correct
59 Correct 8 ms 6784 KB Output is correct
60 Correct 8 ms 6784 KB Output is correct
61 Correct 8 ms 6784 KB Output is correct
62 Correct 8 ms 6784 KB Output is correct
63 Correct 8 ms 6784 KB Output is correct
64 Correct 8 ms 6784 KB Output is correct
65 Correct 315 ms 25464 KB Output is correct
66 Correct 326 ms 25464 KB Output is correct
67 Correct 325 ms 25592 KB Output is correct
68 Correct 325 ms 25464 KB Output is correct
69 Correct 298 ms 25724 KB Output is correct
70 Correct 304 ms 25464 KB Output is correct
71 Correct 299 ms 25464 KB Output is correct
72 Correct 297 ms 25464 KB Output is correct
73 Correct 301 ms 25464 KB Output is correct
74 Correct 321 ms 25464 KB Output is correct
75 Correct 303 ms 25424 KB Output is correct
76 Correct 308 ms 25464 KB Output is correct
77 Correct 917 ms 63224 KB Output is correct
78 Correct 958 ms 63336 KB Output is correct
79 Correct 994 ms 63352 KB Output is correct
80 Correct 943 ms 63352 KB Output is correct
81 Correct 993 ms 63256 KB Output is correct
82 Correct 966 ms 63484 KB Output is correct
83 Correct 973 ms 63160 KB Output is correct
84 Correct 927 ms 63224 KB Output is correct
85 Correct 924 ms 63276 KB Output is correct
86 Correct 886 ms 63216 KB Output is correct
87 Correct 897 ms 63224 KB Output is correct
88 Correct 886 ms 63352 KB Output is correct
89 Correct 892 ms 63228 KB Output is correct
90 Correct 902 ms 63352 KB Output is correct
91 Correct 890 ms 63480 KB Output is correct
92 Correct 886 ms 63352 KB Output is correct

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 6528 KB Output is correct
2 Correct 5 ms 6528 KB Output is correct
3 Correct 4 ms 6528 KB Output is correct
4 Correct 4 ms 6528 KB Output is correct
5 Correct 4 ms 6528 KB Output is correct
6 Correct 4 ms 6528 KB Output is correct
7 Correct 4 ms 6528 KB Output is correct
8 Correct 4 ms 6528 KB Output is correct
9 Correct 5 ms 6528 KB Output is correct
10 Correct 4 ms 6528 KB Output is correct
11 Correct 4 ms 6528 KB Output is correct
12 Correct 5 ms 6528 KB Output is correct
13 Correct 4 ms 6528 KB Output is correct
14 Correct 4 ms 6528 KB Output is correct
15 Correct 4 ms 6528 KB Output is correct
16 Correct 4 ms 6528 KB Output is correct
17 Correct 4 ms 6528 KB Output is correct
18 Correct 4 ms 6528 KB Output is correct
19 Correct 4 ms 6528 KB Output is correct
20 Correct 4 ms 6528 KB Output is correct
21 Correct 4 ms 6528 KB Output is correct
22 Correct 4 ms 6528 KB Output is correct
23 Correct 4 ms 6528 KB Output is correct
24 Correct 4 ms 6528 KB Output is correct
25 Correct 4 ms 6528 KB Output is correct
26 Correct 4 ms 6528 KB Output is correct
27 Correct 4 ms 6528 KB Output is correct
28 Correct 4 ms 6528 KB Output is correct
29 Correct 4 ms 6528 KB Output is correct
30 Correct 5 ms 6528 KB Output is correct
31 Correct 4 ms 6528 KB Output is correct
32 Correct 5 ms 6528 KB Output is correct
33 Correct 4 ms 6528 KB Output is correct
34 Correct 5 ms 6528 KB Output is correct
35 Correct 5 ms 6528 KB Output is correct
36 Correct 5 ms 6528 KB Output is correct
37 Correct 6 ms 6528 KB Output is correct
38 Correct 5 ms 6528 KB Output is correct
39 Correct 6 ms 6528 KB Output is correct
40 Correct 6 ms 6528 KB Output is correct
41 Correct 5 ms 6528 KB Output is correct
42 Correct 6 ms 6528 KB Output is correct
43 Correct 6 ms 6528 KB Output is correct
44 Correct 6 ms 6560 KB Output is correct
45 Correct 6 ms 6528 KB Output is correct
46 Correct 6 ms 6528 KB Output is correct
47 Correct 4 ms 6528 KB Output is correct
48 Correct 5 ms 6528 KB Output is correct
49 Correct 6 ms 6528 KB Output is correct
50 Correct 5 ms 6528 KB Output is correct
51 Correct 5 ms 6528 KB Output is correct
52 Correct 9 ms 6784 KB Output is correct
53 Correct 8 ms 6784 KB Output is correct
54 Correct 8 ms 6784 KB Output is correct
55 Correct 8 ms 6784 KB Output is correct
56 Correct 9 ms 6784 KB Output is correct
57 Correct 8 ms 6784 KB Output is correct
58 Correct 6 ms 6784 KB Output is correct
59 Correct 8 ms 6784 KB Output is correct
60 Correct 8 ms 6784 KB Output is correct
61 Correct 8 ms 6784 KB Output is correct
62 Correct 8 ms 6784 KB Output is correct
63 Correct 8 ms 6784 KB Output is correct
64 Correct 8 ms 6784 KB Output is correct
65 Correct 315 ms 25464 KB Output is correct
66 Correct 326 ms 25464 KB Output is correct
67 Correct 325 ms 25592 KB Output is correct
68 Correct 325 ms 25464 KB Output is correct
69 Correct 298 ms 25724 KB Output is correct
70 Correct 304 ms 25464 KB Output is correct
71 Correct 299 ms 25464 KB Output is correct
72 Correct 297 ms 25464 KB Output is correct
73 Correct 301 ms 25464 KB Output is correct
74 Correct 321 ms 25464 KB Output is correct
75 Correct 303 ms 25424 KB Output is correct
76 Correct 308 ms 25464 KB Output is correct
77 Correct 917 ms 63224 KB Output is correct
78 Correct 958 ms 63336 KB Output is correct
79 Correct 994 ms 63352 KB Output is correct
80 Correct 943 ms 63352 KB Output is correct
81 Correct 993 ms 63256 KB Output is correct
82 Correct 966 ms 63484 KB Output is correct
83 Correct 973 ms 63160 KB Output is correct
84 Correct 927 ms 63224 KB Output is correct
85 Correct 924 ms 63276 KB Output is correct
86 Correct 886 ms 63216 KB Output is correct
87 Correct 897 ms 63224 KB Output is correct
88 Correct 886 ms 63352 KB Output is correct
89 Correct 892 ms 63228 KB Output is correct
90 Correct 902 ms 63352 KB Output is correct
91 Correct 890 ms 63480 KB Output is correct
92 Correct 886 ms 63352 KB Output is correct
93 Execution timed out 3117 ms 661340 KB Time limit exceeded
94 Halted 0 ms 0 KB -