제출 #1207907

#제출 시각아이디문제언어결과실행 시간메모리
1207907dksnfjkfnwkfwMarshmallow Molecules (CCO19_day2problem2)C++20
10 / 25
2781 ms126764 KiB
#include <bits/stdc++.h> using namespace std; #define sonic ios_base::sync_with_stdio(false);cin.tie(0); cout.tie(0) #define IO(main) if(fopen(main".inp","r")){freopen(main".inp","r",stdin);freopen(main".out","w",stdout);} #define pb push_back #define fi first #define se second #define mp make_pair #define ins insert #define pb push_back #define el cout << endl #define SZ(x) ((int)(x).size()) #define ALL(x) (x).begin(), (x).end() #define MASK(i) ((1LL)<<(i)) #define BIT(x,i) (((x)>>(i))&(1LL)) #define FOR(i, a, b) for(int (i)=(a);(i)<=(b); i++) #define FORD(i, a, b) for(int (i)=(a);(i)>=(b); i--) using ll = long long; using ull = unsigned long long; using ld = long double; using pii = pair<int, int>; using pll = pair<ll, ll>; using vi = vector<int>; using vii = vector<pii>; const int N = 1e6 + 9; const int mod = 1e9 + 7; const ll INF = 1e18 + 7; const int base = 31; const int LOG = 20; const ll MOD = 1e9 + 7; int mul(int x, int y) {return 1LL * x * y % mod;} int calPw(int x, int y) { int ans = 1; while(y) { if (y&1) ans = 1LL * ans * x % mod; x = 1LL * x * x % mod; y >>= 1; } return ans; } int d4x[4] = {1, 0, -1, 0}; int d4y[4] = {0, 1, 0, -1}; int dx[8] = {0, 1, 1, 1, 0, -1, -1, -1}; int dy[8] = {1, 1, 0, -1, -1, -1, 0, 1}; ///Author: Le Chi Thien Luong The Vinh high school 2008 ///code template<class X, class Y> bool minimize(X &x , Y y){ if(x > y){ x = y; return true; } return false; } template<class X, class Y> bool maximize(X &x , Y y){ if(x < y){ x = y; return true; } return false; } template<class X, class Y> bool add(X &x , Y y){ if((x + y ) >= mod){ ll tmp = x + y; x = tmp - mod; return true; } return false; } void Solve(){ } int n, m; pii a[N]; bool used[5005][5005]; int pre[5005][5005]; bitset<5005>dp[5005]; void Read(){ cin >> n >> m; FOR(i, 1, m){ cin >> a[i].fi >> a[i].se; used[a[i].fi][a[i].se] = 1; used[a[i].se][a[i].fi] = 1; int x = a[i].fi; int y = a[i].se; if(x > y)swap(x, y); dp[y][x] = 1; pre[y][x] =1; } FOR(i, 1, n){ FOR(j, 1, n)pre[i][j] += pre[i][j - 1]; } // FOR(i, 0, n)cout << dp[3][i] << " " ;el; // FOR(i, 0, n)cout << dp[6][i] << " " ;el; // bitset<5005>cnt = (dp[3] & dp[6]); // FOR(i, 0, n)cout << cnt[i] << " ";el; /// el;el;el; ll ans = m; FOR(i, 2, n){ FOR(j, i + 1, n){ if(used[i][j] == 1)continue; bitset<5005> igg = (dp[i] & dp[j]); if(igg.count() > 0){ ans++; dp[j][i] = 1; } } } /// el; cout << ans; } int main() { sonic; int TEST = 1; // cin >> TEST; while(TEST--) { Read(); Solve(); } }
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