oj.uz

Submission #645484

# Submission time Handle Problem Language Result Execution time Memory
645484 2022-09-27T08:27:11 Z mychecksedad Paths (BOI18_paths) C++17
100 / 100
 640 ms 124132 KB 
/* Author : Mychecksdead */
#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef long double ld;
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define PI 3.1415926535
#define pb push_back
#define setp() cout << setprecision(15)
#define all(x) x.begin(), x.end()
#define debug(x) cerr << #x << " is " << x << '\n';
const int N = 1e6+100, M = 1e5+10, F = 2147483646, K = 20;



int n, m, k, a[N];
ll ans = 0, dp[N][32];
vector<int> g[N];
vector<bool> vis(N);
void dfs(int v, int p, int d){
    vis[v] = 1;
    for(int u: g[v]){
        for(int mask = 0; mask < (1<<k); ++mask){
            if(__builtin_popcount(mask) == d){
                if(!(mask&(1<<a[v]))) continue;
                if(a[u] != a[v]){
                    dp[v][mask] += dp[u][mask ^ (1<<a[v])];
                    ans += dp[u][mask ^ (1<<a[v])];
                }
            }
        }
        if(vis[u]) continue;
        dfs(u, v, d);
    }
}


void solve(){
    cin >> n >> m >> k;
    for(int i = 1; i <= n; ++i) cin >> a[i];
    for(int i = 1; i <= n; ++i){
        --a[i];
        for(int j = 0; j < (1<<k); ++j) dp[i][j] = 0;
        dp[i][1<<a[i]]++;
    }
    for(int i = 0; i < m; ++i){
        int u, v; cin >> u >> v;
        g[u].pb(v);
        g[v].pb(u);
    }
    for(int j = 2; j <= k; ++j){
        vis.clear();
        vis.resize(n+1);
        for(int i = 1; i <= n; ++i) if(!vis[i]) dfs(i, 0, j);
    }
    cout << ans;
}   





int main(){
    cin.tie(0); ios::sync_with_stdio(0);
    int T = 1, aa;
    // cin >> T;aa=T;
    while(T--){
        // cout << "Case #" << aa-T << ": ";
        solve();
        cout << '\n';
    }
    return 0;
 
}

Compilation message

paths.cpp: In function 'int main()':
paths.cpp:66:16: warning: unused variable 'aa' [-Wunused-variable]
   66 |     int T = 1, aa;
      |                ^~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23940 KB Output is correct
2 Correct 13 ms 23892 KB Output is correct
3 Correct 16 ms 23932 KB Output is correct
4 Correct 13 ms 23892 KB Output is correct
5 Correct 13 ms 23872 KB Output is correct
6 Correct 13 ms 23936 KB Output is correct
7 Correct 13 ms 23892 KB Output is correct
8 Correct 13 ms 23948 KB Output is correct
9 Correct 14 ms 24020 KB Output is correct
10 Correct 16 ms 23940 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 110 ms 30104 KB Output is correct
2 Correct 105 ms 30096 KB Output is correct
3 Correct 474 ms 123428 KB Output is correct
4 Correct 122 ms 43048 KB Output is correct
5 Correct 111 ms 39208 KB Output is correct
6 Correct 286 ms 85700 KB Output is correct
7 Correct 343 ms 112340 KB Output is correct
8 Correct 393 ms 112768 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23940 KB Output is correct
2 Correct 13 ms 23892 KB Output is correct
3 Correct 16 ms 23932 KB Output is correct
4 Correct 13 ms 23892 KB Output is correct
5 Correct 13 ms 23872 KB Output is correct
6 Correct 13 ms 23936 KB Output is correct
7 Correct 13 ms 23892 KB Output is correct
8 Correct 13 ms 23948 KB Output is correct
9 Correct 14 ms 24020 KB Output is correct
10 Correct 16 ms 23940 KB Output is correct
11 Correct 110 ms 30104 KB Output is correct
12 Correct 105 ms 30096 KB Output is correct
13 Correct 474 ms 123428 KB Output is correct
14 Correct 122 ms 43048 KB Output is correct
15 Correct 111 ms 39208 KB Output is correct
16 Correct 286 ms 85700 KB Output is correct
17 Correct 343 ms 112340 KB Output is correct
18 Correct 393 ms 112768 KB Output is correct
19 Correct 104 ms 32244 KB Output is correct
20 Correct 93 ms 30000 KB Output is correct
21 Correct 395 ms 123448 KB Output is correct
22 Correct 148 ms 43076 KB Output is correct
23 Correct 103 ms 39200 KB Output is correct
24 Correct 299 ms 85624 KB Output is correct
25 Correct 393 ms 110904 KB Output is correct
26 Correct 373 ms 112352 KB Output is correct
27 Correct 184 ms 30204 KB Output is correct
28 Correct 213 ms 34316 KB Output is correct
29 Correct 640 ms 124132 KB Output is correct
30 Correct 429 ms 77428 KB Output is correct
31 Correct 452 ms 80960 KB Output is correct
32 Correct 604 ms 113116 KB Output is correct
33 Correct 17 ms 23880 KB Output is correct
34 Correct 17 ms 23924 KB Output is correct
35 Correct 13 ms 23844 KB Output is correct
36 Correct 14 ms 23936 KB Output is correct
37 Correct 17 ms 23944 KB Output is correct
38 Correct 17 ms 23916 KB Output is correct
39 Correct 13 ms 23892 KB Output is correct
40 Correct 16 ms 23892 KB Output is correct
41 Correct 14 ms 23932 KB Output is correct
42 Correct 13 ms 23892 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23820 KB Output is correct
2 Correct 129 ms 25916 KB Output is correct
3 Correct 40 ms 25940 KB Output is correct
4 Correct 128 ms 57196 KB Output is correct
5 Correct 115 ms 54204 KB Output is correct
6 Correct 305 ms 57216 KB Output is correct
7 Correct 66 ms 25960 KB Output is correct
8 Correct 171 ms 57180 KB Output is correct
9 Correct 126 ms 54204 KB Output is correct
10 Correct 143 ms 54344 KB Output is correct
11 Correct 191 ms 40616 KB Output is correct
12 Correct 220 ms 47068 KB Output is correct
13 Correct 228 ms 39900 KB Output is correct
14 Correct 282 ms 53584 KB Output is correct
15 Correct 267 ms 53596 KB Output is correct
16 Correct 18 ms 23892 KB Output is correct
17 Correct 14 ms 23892 KB Output is correct
18 Correct 18 ms 23956 KB Output is correct
19 Correct 18 ms 23956 KB Output is correct
20 Correct 15 ms 23892 KB Output is correct
21 Correct 15 ms 23892 KB Output is correct
22 Correct 17 ms 23908 KB Output is correct
23 Correct 13 ms 23940 KB Output is correct
24 Correct 16 ms 23944 KB Output is correct
25 Correct 13 ms 23900 KB Output is correct