#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long ll;
typedef double db;
typedef vector<long long> vl;
typedef pair<long long , long long > pl;
const int N=1e6+1;
#define po pop_back
#define pb push_back
#define mk make_pair
#define lw lower_bound
#define up upper_bound
#define ff first
#define ss second
#define boost ios_base::sync_with_stdio(); cin.tie(0); cout.tie(0);
#define MOD 1000000007
#define MAX 1e18
#define MIN -1e18
#define rep(i,a,b) for(ll i=a;i<=b;i++)
#define per(i,a,b) for(ll i=b;i>=a;i--)
#define con continue
#define freopen freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout);
#define PI 3.14159265358979323846264338327950288419716939937510582097494459230781640628
// typedef tree<ll , null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
// template< typename T>
// using indexed_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
ll sz,n,m,ans,mid,mn,mx,cnt,T,sum,h1,h2,e[1234567],b[1234567],c[1234567],d[1<<20],k,i,j,l,h,a[1234567],w,x,y,z;
bool used[1234];
vector<ll> v[1234];
void dfs(ll x,ll y){
if(y != 0) ans += y-1;
used[x] = 1;
for(ll i=0;i<v[x].size();i++){
ll u = v[x][i];
if(used[u]==0) dfs(u,y+1);
}
}
ll C(ll x){
return x*(x-1)*(x-2)/6;
}
void dps(ll x){
used[x]=1;
sz++;
mx+=v[x].size();
for(auto u:v[x]){
if(used[u]==0)dps(u);
}
}
int main(){
cin>>n>>m;
for(ll i=0;i<m;i++){
ll a,b;
cin>>a>>b;
a--;
b--;
v[a].pb(b);
v[b].pb(a);
if(v[a].size() > 2)cnt++;
if(v[b].size() > 2)cnt++;
}
if(cnt==0){
rep(i,0,n-1){
if(used[i]==0){
sz=0;
mx=0;
dps(i);
if(sz * 2 == mx){
ans += C(n)*6;
}
else{
ans += C(n)*2;
}}
}
}
for(ll i=0;i<n;i++){
rep(j,0,n)used[j]=0;
dfs(i,0);
}
cout<<ans;
}
Compilation message
count_triplets.cpp: In function 'void dfs(ll, ll)':
count_triplets.cpp:36:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(ll i=0;i<v[x].size();i++){
~^~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
131 ms |
11512 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
15 ms |
384 KB |
Output is correct |
| 2 |
Correct |
16 ms |
384 KB |
Output is correct |
| 3 |
Correct |
15 ms |
384 KB |
Output is correct |
| 4 |
Incorrect |
22 ms |
384 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
116 ms |
12792 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
16 ms |
384 KB |
Output is correct |
| 2 |
Correct |
16 ms |
384 KB |
Output is correct |
| 3 |
Incorrect |
17 ms |
384 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
124 ms |
12792 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
