Submission #872792

#	Time	Username	Problem	Language	Result	Execution time	Memory
872792		mat_jur	Cake 3 (JOI19_cake3)	C++17	0 / 100	1 ms	348 KiB

cake3

#include <bits/stdc++.h>
using namespace std;
#ifdef DEBUG
auto&operator<<(auto &o, pair<auto, auto> p) {o << "(" << p.first << ", " << p.second << ")"; return o;}
auto operator<<(auto &o, auto x)->decltype(x.end(), o) {o<<"{"; for(auto e : x) o<<e<<", "; return o<<"}";}
#define debug(X) cerr << "["#X"]: " << X << '\n';
#else 
#define cerr if(0)cout
#define debug(X) ;
#endif
#define ll long long
#define all(v) (v).begin(), (v).end()
#define FOR(i,l,r) for(int i=(l);i<=(r);++i)
#define ROF(i,r,l) for(int i=(r);i>=(l);--i)
#define REP(i,n) FOR(i,0,(n)-1)
#define ssize(x) int(x.size())
#define fi first
#define se second
#define mp make_pair
#define eb emplace_back

int main() {
	ios_base::sync_with_stdio(false); cin.tie(nullptr);

	int n, m;
	cin >> n >> m;
	vector<int> v(n), c(n);
	REP(i, n) cin >> v[i] >> c[i];
	ll res = 0;
	for (int bm = 0; bm < (1<<n); bm++) {
		if (__builtin_popcount(bm) != m) continue;
		vector<int> a;
		REP(j, n) {
			if (bm&(1<<j)) a.eb(j);
		}
		ll sum = 0;
		for (auto j : a) sum += v[j];
		do {
			ll x = 0;
			REP(i, m-1) x += abs(c[a[i]]-c[a[i+1]]);
			x += abs(c[a[m-1]]-c[a[0]]);
			res = max(res, sum-x);
		} while (next_permutation(all(a)));
	}
	cout << res << '\n';

	return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 19
• Subtask 3: 0 / 76