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Submission #213442

# Submission time Handle Problem Language Result Execution time Memory
213442 2020-03-25T20:22:34 Z MKopchev Paths (BOI18_paths) C++14
100 / 100
 420 ms 54392 KB 
#include<bits/stdc++.h>
using namespace std;
const int nmax=3e5+42;
long long dp[32][nmax];

int colour[nmax];
vector<int> adj[nmax];

int n,m,k;

long long rec(int remain,int pos)
{
    if(remain==0)return 1;
    if(dp[remain][pos])return dp[remain][pos];

    long long ret=1;//alone
    for(auto nxt:adj[pos])
        if((remain&(1<<colour[nxt])))ret=ret+rec(remain-(1<<colour[nxt]),nxt);

    dp[remain][pos]=ret;
    return ret;
}
int main()
{
    scanf("%i%i%i",&n,&m,&k);
    for(int i=1;i<=n;i++)
    {
        scanf("%i",&colour[i]);
        colour[i]--;
    }

    int u,v;
    for(int i=1;i<=m;i++)
    {
        scanf("%i%i",&u,&v);
        adj[u].push_back(v);
        adj[v].push_back(u);
    }

    long long ret=0;
    for(int i=1;i<=n;i++)
        ret=ret+rec((1<<k)-1-(1<<colour[i]),i)-1;

    printf("%lld\n",ret);
    return 0;
}

Compilation message

paths.cpp: In function 'int main()':
paths.cpp:25:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%i%i%i",&n,&m,&k);
     ~~~~~^~~~~~~~~~~~~~~~~~~
paths.cpp:28:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%i",&colour[i]);
         ~~~~~^~~~~~~~~~~~~~~~~
paths.cpp:35:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%i%i",&u,&v);
         ~~~~~^~~~~~~~~~~~~~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 7552 KB Output is correct
2 Correct 8 ms 7552 KB Output is correct
3 Correct 8 ms 7424 KB Output is correct
4 Correct 10 ms 7424 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 8 ms 7552 KB Output is correct
7 Correct 8 ms 7424 KB Output is correct
8 Correct 8 ms 7552 KB Output is correct
9 Correct 9 ms 7424 KB Output is correct
10 Correct 8 ms 7424 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 108 ms 14072 KB Output is correct
2 Correct 92 ms 13176 KB Output is correct
3 Correct 341 ms 35556 KB Output is correct
4 Correct 136 ms 15736 KB Output is correct
5 Correct 121 ms 15356 KB Output is correct
6 Correct 244 ms 28908 KB Output is correct
7 Correct 342 ms 35576 KB Output is correct
8 Correct 344 ms 36344 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 7552 KB Output is correct
2 Correct 8 ms 7552 KB Output is correct
3 Correct 8 ms 7424 KB Output is correct
4 Correct 10 ms 7424 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 8 ms 7552 KB Output is correct
7 Correct 8 ms 7424 KB Output is correct
8 Correct 8 ms 7552 KB Output is correct
9 Correct 9 ms 7424 KB Output is correct
10 Correct 8 ms 7424 KB Output is correct
11 Correct 108 ms 14072 KB Output is correct
12 Correct 92 ms 13176 KB Output is correct
13 Correct 341 ms 35556 KB Output is correct
14 Correct 136 ms 15736 KB Output is correct
15 Correct 121 ms 15356 KB Output is correct
16 Correct 244 ms 28908 KB Output is correct
17 Correct 342 ms 35576 KB Output is correct
18 Correct 344 ms 36344 KB Output is correct
19 Correct 107 ms 14072 KB Output is correct
20 Correct 93 ms 13176 KB Output is correct
21 Correct 341 ms 35636 KB Output is correct
22 Correct 130 ms 15736 KB Output is correct
23 Correct 122 ms 15224 KB Output is correct
24 Correct 246 ms 28776 KB Output is correct
25 Correct 344 ms 35448 KB Output is correct
26 Correct 330 ms 36088 KB Output is correct
27 Correct 106 ms 13308 KB Output is correct
28 Correct 132 ms 15612 KB Output is correct
29 Correct 407 ms 54268 KB Output is correct
30 Correct 291 ms 34408 KB Output is correct
31 Correct 312 ms 31984 KB Output is correct
32 Correct 420 ms 54392 KB Output is correct
33 Correct 9 ms 7552 KB Output is correct
34 Correct 8 ms 7552 KB Output is correct
35 Correct 9 ms 7424 KB Output is correct
36 Correct 8 ms 7424 KB Output is correct
37 Correct 9 ms 7424 KB Output is correct
38 Correct 9 ms 7424 KB Output is correct
39 Correct 9 ms 7424 KB Output is correct
40 Correct 8 ms 7552 KB Output is correct
41 Correct 8 ms 7424 KB Output is correct
42 Correct 8 ms 7424 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 7424 KB Output is correct
2 Correct 53 ms 9464 KB Output is correct
3 Correct 36 ms 9216 KB Output is correct
4 Correct 87 ms 16632 KB Output is correct
5 Correct 65 ms 16624 KB Output is correct
6 Correct 135 ms 35576 KB Output is correct
7 Correct 42 ms 9340 KB Output is correct
8 Correct 108 ms 22904 KB Output is correct
9 Correct 72 ms 20592 KB Output is correct
10 Correct 100 ms 18976 KB Output is correct
11 Correct 96 ms 22516 KB Output is correct
12 Correct 70 ms 18288 KB Output is correct
13 Correct 84 ms 19056 KB Output is correct
14 Correct 133 ms 35576 KB Output is correct
15 Correct 126 ms 35704 KB Output is correct
16 Correct 9 ms 7552 KB Output is correct
17 Correct 8 ms 7552 KB Output is correct
18 Correct 8 ms 7424 KB Output is correct
19 Correct 9 ms 7424 KB Output is correct
20 Correct 8 ms 7424 KB Output is correct
21 Correct 8 ms 7552 KB Output is correct
22 Correct 8 ms 7424 KB Output is correct
23 Correct 9 ms 7552 KB Output is correct
24 Correct 9 ms 7400 KB Output is correct
25 Correct 8 ms 7424 KB Output is correct