結果

問題 No.95 Alice and Graph
ユーザー heno239heno239
提出日時 2020-04-08 13:11:10
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 3,633 ms / 5,000 ms
コード長 3,736 bytes
コンパイル時間 1,323 ms
コンパイル使用メモリ 122,392 KB
実行使用メモリ 20,720 KB
最終ジャッジ日時 2024-07-18 10:14:30
合計ジャッジ時間 18,467 ms
ジャッジサーバーID
(参考情報)
judge4 / judge5
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 1,037 ms
20,592 KB
testcase_01 AC 3,633 ms
20,720 KB
testcase_02 AC 3,611 ms
20,464 KB
testcase_03 AC 4 ms
7,492 KB
testcase_04 AC 750 ms
13,936 KB
testcase_05 AC 585 ms
13,932 KB
testcase_06 AC 721 ms
14,060 KB
testcase_07 AC 3,325 ms
20,588 KB
testcase_08 AC 4 ms
7,620 KB
testcase_09 AC 4 ms
7,492 KB
testcase_10 AC 4 ms
7,616 KB
testcase_11 AC 4 ms
7,492 KB
testcase_12 AC 5 ms
7,492 KB
testcase_13 AC 1,689 ms
13,936 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include<iostream>
#include<string>
#include<cstdio>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<utility>
#include<cassert>
#include<complex>
#include<numeric>
using namespace std;

//#define int long long
typedef long long ll;

typedef unsigned long long ul;
typedef unsigned int ui;
ll mod = 100003;
const ll INF = mod * mod;
typedef pair<int, int>P;
#define stop char nyaa;cin>>nyaa;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
#define all(v) (v).begin(),(v).end()
typedef pair<ll, ll> LP;
typedef long double ld;
typedef pair<ld, ld> LDP;
const ld eps = 1e-12;
const ld pi = acos(-1.0);

ll mod_pow(ll a, ll n, ll m = mod) {
	ll res = 1;
	while (n) {
		if (n & 1)res = res * a%m;
		a = a * a%m; n >>= 1;
	}
	return res;
}

struct modint {
	ll n;
	modint() :n(0) { ; }
	modint(ll m) :n(m) {
		if (n >= mod)n %= mod;
		else if (n < 0)n = (n%mod + mod) % mod;
	}
	operator int() { return n; }
};
bool operator==(modint a, modint b) { return a.n == b.n; }
modint operator+=(modint &a, modint b) { a.n += b.n; if (a.n >= mod)a.n -= mod; return a; }
modint operator-=(modint &a, modint b) { a.n -= b.n; if (a.n < 0)a.n += mod; return a; }
modint operator*=(modint &a, modint b) { a.n = ((ll)a.n*b.n) % mod; return a; }
modint operator+(modint a, modint b) { return a += b; }
modint operator-(modint a, modint b) { return a -= b; }
modint operator*(modint a, modint b) { return a *= b; }
modint operator^(modint a, int n) {
	if (n == 0)return modint(1);
	modint res = (a*a) ^ (n / 2);
	if (n % 2)res = res * a;
	return res;
}

ll inv(ll a, ll p) {
	return (a == 1 ? 1 : (1 - p * inv(p%a, a)) / a + p);
}
modint operator/(modint a, modint b) { return a * modint(inv(b, mod)); }
const int max_n = 1 << 18;
modint fact[max_n], factinv[max_n];
void init_f() {
	fact[0] = modint(1);
	for (int i = 0; i < max_n - 1; i++) {
		fact[i + 1] = fact[i] * modint(i + 1);
	}
	factinv[max_n - 1] = modint(1) / fact[max_n - 1];
	for (int i = max_n - 2; i >= 0; i--) {
		factinv[i] = factinv[i + 1] * modint(i + 1);
	}
}
modint comb(int a, int b) {
	if (a < 0 || b < 0 || a < b)return 0;
	return fact[a] * factinv[b] * factinv[a - b];
}

int dx[4] = { 0,1,0,-1 };
int dy[4] = { 1,0,-1,0 };


int dist[60][60];

bool can(vector<int> v,int k) {
	int sz = v.size();
	vector<vector<int>> dp((1 << sz), vector<int>(sz,100));
	sort(all(v));
	dp[1][0] = 0;
	rep1(i, (1 << sz) - 1) {
		rep(j, sz) {
			if (i&(1 << j)) {
				rep(to, sz) {
					if (i&(1 << to))continue;
					int ni = i ^ (1 << to);
					dp[ni][to] = min(dp[ni][to], dp[i][j] + dist[v[j]][v[to]]);
				}
			}
		}
	}
	rep(j, sz)if (dp[(1 << sz) - 1][j] <= k)return true;
	return false;
}
void solve() {
	int n, m, k; cin >> n >> m >> k;
	rep(i, n)rep(j, n) {
		if (i == j)dist[i][j] = 0;
		else dist[i][j] = 100;
	}
	rep(i, m) {
		int a, b; cin >> a >> b; a--; b--;
		dist[a][b] = dist[b][a] = 1;
	}
	rep(k, n)rep(i, n)rep(j, n) {
		dist[i][j] = min(dist[i][j], dist[i][k] + dist[k][j]);
	}
	vector<int> v; v.push_back(0);
	for (int i = n - 1; i > 0; i--) {
		v.push_back(i);
		if (!can(v, k))v.pop_back();
	}
	ll ans = 0;
	rep(i, v.size()) {
		ll s = ((ll)1 << v[i]) - 1;
		ans += s;
	}
	cout << ans << "\n";
}


signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	//cout << fixed << setprecision(7);
	//init_f();
	//init();
	//int t; cin >> t; rep(i, t)solve();
	solve();
	stop
		return 0;
}
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