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Submission #440224

# Submission time Handle Problem Language Result Execution time Memory
440224 2021-07-01T19:09:50 Z Dirii Paths (BOI18_paths) C++14
100 / 100
 493 ms 100492 KB 
#include <bits/stdc++.h>
#define ll long long
#define cll const ll
#define lp(a, b, c) for(ll a = b; a <= c; ++a)
#define lpd(a, b, c) for(ll a = b; a >= c; --a)
#define vec(a) vector<a>
#define pp(a, b) pair<a, b>
#define EACHCASE lpd(cs, read(), 1)
#define Fname "f"
using namespace std;

template <typename T> inline void Read(T &x){
    x = 0; char c;
    while(!isdigit(c = getchar()));
    do
    {
        x = x * 10 + c - '0';
    } while (isdigit(c = getchar()));
}

ll read(){
    ll tmp;
    cin >> tmp;
    return tmp;
}

void giuncute(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
}

void OF(){
    freopen(Fname".inp", "r", stdin);
    freopen(Fname".out", "w", stdout);
}

cll mxn = 3e5 + 7, mxk = 5;
ll n, m, k, a[mxn], dp[mxn][1 << mxk] = {{0}}, ans = 0;
vec(ll) g[mxn], state[6];

inline ll cntbit(ll x){
    if(!x) return 0;
    return cntbit(x >> 1) + (x & 1);
}

int main(){
    giuncute();
    cin >> n >> m >> k;
    lp(i, 1, n) a[i] = read() - 1, dp[i][1 << a[i]] = 1;
    lp(i, 1, m){
        ll u, v;
        cin >> u >> v;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    lp(i, 1, (1 << mxk) - 1) if(i < (1 << k)) state[cntbit(i)].push_back(i);
    lp(i, 2, k){
        lp(u, 1, n){
            for(ll stt : state[i]){ 
                if(stt & (1 << a[u]))
                    for(ll v : g[u]) 
                        dp[u][stt] += dp[v][stt ^ (1 << a[u])];
                ans += dp[u][stt];
            }
        }
    }
    cout << ans;
}

Compilation message

paths.cpp: In function 'void OF()':
paths.cpp:33:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     freopen(Fname".inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
paths.cpp:34:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |     freopen(Fname".out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7372 KB Output is correct
2 Correct 6 ms 7372 KB Output is correct
3 Correct 6 ms 7312 KB Output is correct
4 Correct 5 ms 7368 KB Output is correct
5 Correct 6 ms 7372 KB Output is correct
6 Correct 5 ms 7372 KB Output is correct
7 Correct 6 ms 7368 KB Output is correct
8 Correct 5 ms 7372 KB Output is correct
9 Correct 7 ms 7372 KB Output is correct
10 Correct 6 ms 7368 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 89 ms 18572 KB Output is correct
2 Correct 69 ms 16916 KB Output is correct
3 Correct 405 ms 99844 KB Output is correct
4 Correct 130 ms 26564 KB Output is correct
5 Correct 118 ms 26600 KB Output is correct
6 Correct 253 ms 72000 KB Output is correct
7 Correct 377 ms 99848 KB Output is correct
8 Correct 367 ms 100396 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7372 KB Output is correct
2 Correct 6 ms 7372 KB Output is correct
3 Correct 6 ms 7312 KB Output is correct
4 Correct 5 ms 7368 KB Output is correct
5 Correct 6 ms 7372 KB Output is correct
6 Correct 5 ms 7372 KB Output is correct
7 Correct 6 ms 7368 KB Output is correct
8 Correct 5 ms 7372 KB Output is correct
9 Correct 7 ms 7372 KB Output is correct
10 Correct 6 ms 7368 KB Output is correct
11 Correct 89 ms 18572 KB Output is correct
12 Correct 69 ms 16916 KB Output is correct
13 Correct 405 ms 99844 KB Output is correct
14 Correct 130 ms 26564 KB Output is correct
15 Correct 118 ms 26600 KB Output is correct
16 Correct 253 ms 72000 KB Output is correct
17 Correct 377 ms 99848 KB Output is correct
18 Correct 367 ms 100396 KB Output is correct
19 Correct 90 ms 18668 KB Output is correct
20 Correct 70 ms 16980 KB Output is correct
21 Correct 345 ms 99776 KB Output is correct
22 Correct 145 ms 26656 KB Output is correct
23 Correct 112 ms 26516 KB Output is correct
24 Correct 254 ms 71856 KB Output is correct
25 Correct 397 ms 99960 KB Output is correct
26 Correct 370 ms 100492 KB Output is correct
27 Correct 74 ms 16948 KB Output is correct
28 Correct 102 ms 20804 KB Output is correct
29 Correct 493 ms 99868 KB Output is correct
30 Correct 301 ms 58844 KB Output is correct
31 Correct 332 ms 58852 KB Output is correct
32 Correct 461 ms 99772 KB Output is correct
33 Correct 5 ms 7372 KB Output is correct
34 Correct 5 ms 7372 KB Output is correct
35 Correct 6 ms 7372 KB Output is correct
36 Correct 5 ms 7372 KB Output is correct
37 Correct 5 ms 7384 KB Output is correct
38 Correct 5 ms 7372 KB Output is correct
39 Correct 5 ms 7372 KB Output is correct
40 Correct 5 ms 7372 KB Output is correct
41 Correct 7 ms 7352 KB Output is correct
42 Correct 5 ms 7372 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7368 KB Output is correct
2 Correct 30 ms 10316 KB Output is correct
3 Correct 26 ms 10424 KB Output is correct
4 Correct 98 ms 38052 KB Output is correct
5 Correct 68 ms 38400 KB Output is correct
6 Correct 155 ms 37944 KB Output is correct
7 Correct 29 ms 10392 KB Output is correct
8 Correct 123 ms 37956 KB Output is correct
9 Correct 81 ms 38468 KB Output is correct
10 Correct 103 ms 38688 KB Output is correct
11 Correct 91 ms 23996 KB Output is correct
12 Correct 97 ms 31068 KB Output is correct
13 Correct 95 ms 24360 KB Output is correct
14 Correct 176 ms 37976 KB Output is correct
15 Correct 189 ms 38080 KB Output is correct
16 Correct 6 ms 7372 KB Output is correct
17 Correct 5 ms 7364 KB Output is correct
18 Correct 5 ms 7372 KB Output is correct
19 Correct 5 ms 7356 KB Output is correct
20 Correct 6 ms 7368 KB Output is correct
21 Correct 6 ms 7368 KB Output is correct
22 Correct 5 ms 7372 KB Output is correct
23 Correct 6 ms 7372 KB Output is correct
24 Correct 5 ms 7372 KB Output is correct
25 Correct 6 ms 7372 KB Output is correct