結果
問題 | No.488 四角関係 |
ユーザー |
|
提出日時 | 2017-02-26 09:31:48 |
言語 | C++11 (gcc 13.3.0) |
結果 |
AC
|
実行時間 | 21 ms / 5,000 ms |
コード長 | 2,856 bytes |
コンパイル時間 | 734 ms |
コンパイル使用メモリ | 86,492 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-11 16:33:03 |
合計ジャッジ時間 | 1,638 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 22 |
ソースコード
#include<iostream>#include<fstream>#include<sstream>#include<algorithm>#include<vector>#include<queue>#include<map>#include<set>#include<string>#include<cmath>#include<cstdio>#include<cassert>using namespace std;#define REP(i,m,n) for(int i=(m); i<(int)(n); i++)#define RREP(i,m,n) for(int i=(int)(n-1); i>=m; i--)#define rep(i,n) REP(i,0,n)#define rrep(i,n) RREP(i,0,n)#define all(a) (a).begin(),(a).end()#define rall(a) (a).rbegin(),(a).rend()#define aut(r,v) __typeof(v) r = (v)#define each(it,o) for(aut(it,(o).begin()); it!=(o).end(); ++it)#define reach(it,o) for(aut(it,(o).rbegin()); it!=(o).rend(); ++it)#define fi first#define se second#define dump(x) cerr << " [L" << __LINE__ << "] " << #x << " = " << (x) << endl;template<typename T>string join(vector<T>&v, string del=", "){stringstream s;rep(i,v.size())s<<del<<v[i];return s.str().substr(del.size());}template<typename T1, typename T2> ostream& operator<<(ostream& o, const pair<T1, T2>& p){return o<<"("<<p.first<<", "<<p.second<<")";}template<typename T>ostream& operator<<(ostream& o, vector<T>&v){if(v.size())o<<"["<<join(v)<<"]";return o;}template<typename T>ostream& operator<<(ostream& o, vector<vector<T> >&vv){int l=vv.size();if(l){rep(i,l){o<<(i==0?"[ ":",\n ")<<vv[i]<<(i==l-1?" ]":"");}}return o;}template<typename T>ostream& operator<<(ostream& o, const set<T>& st){vector<T> v(st.begin(),st.end());o<<"{ "<<join(v)<<" }";return o;}template<typename T1, typename T2>ostream& operator<<(ostream& o, const map<T1, T2>& m){each(p,m){o<<(p==m.begin()?"{ ":",\n ")<<*p<<(p==--m.end()?" }":"");}return o;}using ll = long long;using pii = pair<int, int>;using vi = vector<int>;using vvi = vector<vi>;using vl = vector<ll>;using vvl = vector<vl>;const double PI = (1*acos(0.0));const double INF = 0x3f3f3f3f;const double INFL = 0x3f3f3f3f3f3f3f3fLL;const double EPS = 1e-9;const double mod = 1e9 + 7;inline void finput(string filename) {freopen(filename.c_str(), "r", stdin);}int N, M;vvi g;int main(){ios_base::sync_with_stdio(0);// finput("./input");cin >> N >> M;g = vvi(N, vi(N, 0));rep(i, M){int a, b;cin >> a >> b;g[a][b] = 1;g[b][a] = 1;}int sum = 0;rep(i, N){rep(j, N){if(!g[i][j]) continue;if(i == j) continue;rep(k, N){if(!g[j][k]) continue;if(i == k or j == k) continue;rep(l, N){if(!g[k][l] or !g[l][i]) continue;if(i == l or j == l or k == l) continue;int cnt = 0;cnt += g[i][k];cnt += g[j][l];sum += (cnt == 0);}}}}cout << sum/8 << endl;return 0;}