oj.uz

Submission #864752

# Submission time Handle Problem Language Result Execution time Memory
864752 2023-10-23T14:22:30 Z Requiem Amusement Park (CEOI19_amusementpark) C++17
19 / 100
 25 ms 2912 KB 
#include<bits/stdc++.h>
#define int long long
#define pb push_back
#define fast ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#define MOD 998244353
#define INF 1e18
#define fi first
#define se second
#define endl "\n"
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define FORD(i,a,b) for(int i=a;i>=b;i--)
#define sz(a) ((int)(a).size())
#define pi 3.14159265359
#define TASKNAME "amusepark"
template<typename T> bool maximize(T &res, const T &val) { if (res < val){ res = val; return true; }; return false; }
template<typename T> bool minimize(T &res, const T &val) { if (res > val){ res = val; return true; }; return false; }
using namespace std;
typedef pair<int,int> ii;
typedef pair<int,ii> iii;
typedef vector<int> vi;
const int MAXN = 3e2 + 9;
ii edge[MAXN],tmp[MAXN];
int n,m,ans=0;
int degree[MAXN];
vector<int> g[MAXN];
queue<int> q;

bool check(){
    for(int i=1;i<=n;i++){
        degree[i] = 0;
        g[i].clear();
    }
    for(int i=1;i<=m;i++){
        g[tmp[i].fi].pb(tmp[i].se);
        degree[tmp[i].se]++;
        // cout<<edge[i].fi<<' '<<edge[i].se<<endl;
    }
    int cnt = 0;
    // cout<<endl<<endl;
    for(int i=1;i<=n;i++){

        if (degree[i] == 0) q.push(i);
    }

    while(!q.empty()){
        int u = q.front();
        cnt++;
        q.pop();
        for(auto v: g[u]){
            degree[v]--;
            if (degree[v] == 0) q.push(v);
        }
    }
    return cnt == n;
}
int pos[MAXN],w[MAXN][MAXN];
vector<vector<int>> before;
vector<vector<int>> now;
map<int,int> hashcode;
const int base = 311;
main()
{
    fast;
    // freopen(TASKNAME".inp","r",stdin);
    // freopen(TASKNAME".out","w",stdout);
    cin>>n>>m;
    for(int i=1;i<=m;i++){
        cin>>edge[i].fi>>edge[i].se;
        w[edge[i].fi][edge[i].se] = w[edge[i].se][edge[i].fi] = 1;
        tmp[i] = edge[i];
    }
    int permutation[11];
    before.resize(n+1);
    now.resize(n+1);
    iota(permutation+1,permutation+1+n,1);
    do{
        for(int i=1;i<=n;i++){
            pos[permutation[i]] = i;
        }
        int cost = 0;
        for(int i=1;i<=m;i++){
            tmp[i] = edge[i];
        }
        int code = 0;
        for(int i=1;i<=m;i++){
            if (pos[tmp[i].fi] > pos[tmp[i].se]) {
                cost++;
                swap(tmp[i].fi,tmp[i].se);
                code = (code * base + 2) % MOD;
            }
            else code = (code * base + 1)%MOD;
        }
        // cout<<cost<<endl;
        if (hashcode[code] == 0 and check()){
            ans = (ans + cost) % MOD;
            hashcode[code]=1;
        }

    }while(next_permutation(permutation+1,permutation+1+n));
    cout<<ans<<endl;


}

Compilation message

amusementpark.cpp:61:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   61 | main()
      | ^~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 480 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 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 0 ms 348 KB Output is correct
2 Correct 0 ms 480 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 476 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 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 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 348 KB Output is correct

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 480 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 476 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 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 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 348 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 480 KB Output is correct
30 Correct 2 ms 600 KB Output is correct
31 Correct 4 ms 604 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 3 ms 348 KB Output is correct
34 Correct 5 ms 552 KB Output is correct
35 Correct 6 ms 732 KB Output is correct
36 Correct 10 ms 1116 KB Output is correct
37 Correct 17 ms 1912 KB Output is correct
38 Incorrect 25 ms 2912 KB Output isn't correct
39 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 480 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 476 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 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 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 348 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 480 KB Output is correct
30 Correct 2 ms 600 KB Output is correct
31 Correct 4 ms 604 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 3 ms 348 KB Output is correct
34 Correct 5 ms 552 KB Output is correct
35 Correct 6 ms 732 KB Output is correct
36 Correct 10 ms 1116 KB Output is correct
37 Correct 17 ms 1912 KB Output is correct
38 Incorrect 25 ms 2912 KB Output isn't correct
39 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 480 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 476 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 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 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 348 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 480 KB Output is correct
30 Correct 2 ms 600 KB Output is correct
31 Correct 4 ms 604 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 3 ms 348 KB Output is correct
34 Correct 5 ms 552 KB Output is correct
35 Correct 6 ms 732 KB Output is correct
36 Correct 10 ms 1116 KB Output is correct
37 Correct 17 ms 1912 KB Output is correct
38 Incorrect 25 ms 2912 KB Output isn't correct
39 Halted 0 ms 0 KB -