#include <bits/stdc++.h>
#pragma optimize("Ofast")
#pragma target("avx2")
using namespace std;
#define ll long long
#define ld long double
#define pb push_back
#define pf push_front
#define pii pair<int,int>
#define all(v) v.begin(),v.end()
#define F first
#define S second
#define mem(a,i) memset(a,i,sizeof(a))
#define sz(s) (int)s.size()
#define y1 yy
#define ppb pop_back
#define lb lower_bound
#define ub upper_bound
#define gcd(a,b) __gcd(a,b)
#define in insert
#define int ll
const int MAX=1e5+15;
const int B=300;
const int N=104;
const int block=400;
const int maxB=MAX/B+10;
const ll inf=2e18;
const int mod=998244353;
const int mod1=1e9+9;
const ld eps=1e-9;
int dx[8]={1,0,-1,0,1,-1,-1,1};
int dy[8]={0,1,0,-1,1,-1,1,-1};
int binpow(int a,int n){
if(!n)return 1;
if(n%2==1)return a*binpow(a,n-1)%mod;
int k=binpow(a,n/2);
return k*k%mod;
}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int n,m;
int g[20][20];
int use[20][20][20];
void solve(){
cin>>n>>m;
vector<int> vec;
for(int i=1;i<=n;i++){
vec.pb(i);
}
for(int i=1;i<=m;i++){
int a,b;
cin>>a>>b;
g[a][b]=g[b][a]=1;
}
do{
int r=0;
for(int i=1;i<sz(vec);i++){
if(g[vec[i]][vec[i-1]])r++;
else break;
}
for(int i=0;i<=r;i++){
for(int j=i+1;j<=r;j++){
for(int k=j+1;k<=r;k++){
use[vec[i]][vec[j]][vec[k]]=1;
}
}
}
}while(next_permutation(all(vec)));
int ans=0;
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++){
if(i==j)continue;
for(int k=1;k<=n;k++){
if(k==i||k==j)continue;
ans+=use[i][j][k];
}
}
}
cout<<ans;
}
signed main(){
// freopen("help.in","r",stdin);
// freopen("help.out","w",stdout);
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
// prec();
int t=1;
// cin>>t;
while(t--)solve();
}
Compilation message
count_triplets.cpp:3: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
3 | #pragma optimize("Ofast")
|
count_triplets.cpp:4: warning: ignoring '#pragma target ' [-Wunknown-pragmas]
4 | #pragma target("avx2")
|
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
1 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 |
15 ms |
348 KB |
Output is correct |
7 |
Correct |
18 ms |
348 KB |
Output is correct |
8 |
Correct |
24 ms |
496 KB |
Output is correct |
9 |
Correct |
62 ms |
348 KB |
Output is correct |
10 |
Correct |
662 ms |
468 KB |
Output is correct |
11 |
Correct |
23 ms |
344 KB |
Output is correct |
12 |
Correct |
18 ms |
496 KB |
Output is correct |
13 |
Correct |
23 ms |
348 KB |
Output is correct |
14 |
Correct |
18 ms |
464 KB |
Output is correct |
15 |
Correct |
24 ms |
348 KB |
Output is correct |
16 |
Correct |
18 ms |
348 KB |
Output is correct |
17 |
Correct |
18 ms |
348 KB |
Output is correct |
18 |
Correct |
18 ms |
348 KB |
Output is correct |
19 |
Correct |
20 ms |
596 KB |
Output is correct |
20 |
Correct |
16 ms |
344 KB |
Output is correct |
21 |
Correct |
15 ms |
348 KB |
Output is correct |
22 |
Correct |
20 ms |
856 KB |
Output is correct |
23 |
Correct |
3 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
2 ms |
348 KB |
Output is correct |
26 |
Correct |
19 ms |
348 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
2 ms |
348 KB |
Output is correct |
29 |
Correct |
18 ms |
348 KB |
Output is correct |
30 |
Correct |
1 ms |
348 KB |
Output is correct |
31 |
Correct |
3 ms |
348 KB |
Output is correct |
32 |
Correct |
19 ms |
348 KB |
Output is correct |
33 |
Correct |
2 ms |
348 KB |
Output is correct |
34 |
Correct |
2 ms |
348 KB |
Output is correct |
35 |
Correct |
19 ms |
476 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
1 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 |
15 ms |
348 KB |
Output is correct |
7 |
Correct |
18 ms |
348 KB |
Output is correct |
8 |
Correct |
24 ms |
496 KB |
Output is correct |
9 |
Correct |
62 ms |
348 KB |
Output is correct |
10 |
Correct |
662 ms |
468 KB |
Output is correct |
11 |
Correct |
23 ms |
344 KB |
Output is correct |
12 |
Correct |
18 ms |
496 KB |
Output is correct |
13 |
Correct |
23 ms |
348 KB |
Output is correct |
14 |
Correct |
18 ms |
464 KB |
Output is correct |
15 |
Correct |
24 ms |
348 KB |
Output is correct |
16 |
Correct |
18 ms |
348 KB |
Output is correct |
17 |
Correct |
18 ms |
348 KB |
Output is correct |
18 |
Correct |
18 ms |
348 KB |
Output is correct |
19 |
Correct |
20 ms |
596 KB |
Output is correct |
20 |
Correct |
16 ms |
344 KB |
Output is correct |
21 |
Correct |
15 ms |
348 KB |
Output is correct |
22 |
Correct |
20 ms |
856 KB |
Output is correct |
23 |
Correct |
3 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
2 ms |
348 KB |
Output is correct |
26 |
Correct |
19 ms |
348 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
2 ms |
348 KB |
Output is correct |
29 |
Correct |
18 ms |
348 KB |
Output is correct |
30 |
Correct |
1 ms |
348 KB |
Output is correct |
31 |
Correct |
3 ms |
348 KB |
Output is correct |
32 |
Correct |
19 ms |
348 KB |
Output is correct |
33 |
Correct |
2 ms |
348 KB |
Output is correct |
34 |
Correct |
2 ms |
348 KB |
Output is correct |
35 |
Correct |
19 ms |
476 KB |
Output is correct |
36 |
Execution timed out |
1034 ms |
348 KB |
Time limit exceeded |
37 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
2 ms |
2264 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
1 ms |
604 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
2 ms |
2264 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
1 ms |
604 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
2 ms |
2264 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
1 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 |
15 ms |
348 KB |
Output is correct |
7 |
Correct |
18 ms |
348 KB |
Output is correct |
8 |
Correct |
24 ms |
496 KB |
Output is correct |
9 |
Correct |
62 ms |
348 KB |
Output is correct |
10 |
Correct |
662 ms |
468 KB |
Output is correct |
11 |
Correct |
23 ms |
344 KB |
Output is correct |
12 |
Correct |
18 ms |
496 KB |
Output is correct |
13 |
Correct |
23 ms |
348 KB |
Output is correct |
14 |
Correct |
18 ms |
464 KB |
Output is correct |
15 |
Correct |
24 ms |
348 KB |
Output is correct |
16 |
Correct |
18 ms |
348 KB |
Output is correct |
17 |
Correct |
18 ms |
348 KB |
Output is correct |
18 |
Correct |
18 ms |
348 KB |
Output is correct |
19 |
Correct |
20 ms |
596 KB |
Output is correct |
20 |
Correct |
16 ms |
344 KB |
Output is correct |
21 |
Correct |
15 ms |
348 KB |
Output is correct |
22 |
Correct |
20 ms |
856 KB |
Output is correct |
23 |
Correct |
3 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
2 ms |
348 KB |
Output is correct |
26 |
Correct |
19 ms |
348 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
2 ms |
348 KB |
Output is correct |
29 |
Correct |
18 ms |
348 KB |
Output is correct |
30 |
Correct |
1 ms |
348 KB |
Output is correct |
31 |
Correct |
3 ms |
348 KB |
Output is correct |
32 |
Correct |
19 ms |
348 KB |
Output is correct |
33 |
Correct |
2 ms |
348 KB |
Output is correct |
34 |
Correct |
2 ms |
348 KB |
Output is correct |
35 |
Correct |
19 ms |
476 KB |
Output is correct |
36 |
Execution timed out |
1034 ms |
348 KB |
Time limit exceeded |
37 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
1 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 |
15 ms |
348 KB |
Output is correct |
7 |
Correct |
18 ms |
348 KB |
Output is correct |
8 |
Correct |
24 ms |
496 KB |
Output is correct |
9 |
Correct |
62 ms |
348 KB |
Output is correct |
10 |
Correct |
662 ms |
468 KB |
Output is correct |
11 |
Correct |
23 ms |
344 KB |
Output is correct |
12 |
Correct |
18 ms |
496 KB |
Output is correct |
13 |
Correct |
23 ms |
348 KB |
Output is correct |
14 |
Correct |
18 ms |
464 KB |
Output is correct |
15 |
Correct |
24 ms |
348 KB |
Output is correct |
16 |
Correct |
18 ms |
348 KB |
Output is correct |
17 |
Correct |
18 ms |
348 KB |
Output is correct |
18 |
Correct |
18 ms |
348 KB |
Output is correct |
19 |
Correct |
20 ms |
596 KB |
Output is correct |
20 |
Correct |
16 ms |
344 KB |
Output is correct |
21 |
Correct |
15 ms |
348 KB |
Output is correct |
22 |
Correct |
20 ms |
856 KB |
Output is correct |
23 |
Correct |
3 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
2 ms |
348 KB |
Output is correct |
26 |
Correct |
19 ms |
348 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
2 ms |
348 KB |
Output is correct |
29 |
Correct |
18 ms |
348 KB |
Output is correct |
30 |
Correct |
1 ms |
348 KB |
Output is correct |
31 |
Correct |
3 ms |
348 KB |
Output is correct |
32 |
Correct |
19 ms |
348 KB |
Output is correct |
33 |
Correct |
2 ms |
348 KB |
Output is correct |
34 |
Correct |
2 ms |
348 KB |
Output is correct |
35 |
Correct |
19 ms |
476 KB |
Output is correct |
36 |
Execution timed out |
1034 ms |
348 KB |
Time limit exceeded |
37 |
Halted |
0 ms |
0 KB |
- |