oj.uz

Submission #489900

# Submission time Handle Problem Language Result Execution time Memory
489900 2021-11-25T03:05:44 Z fhvirus Sirni (COCI17_sirni) C++17
140 / 140
 4940 ms 395116 KB 
// Knapsack DP is harder than FFT.
#include<bits/stdc++.h>
using namespace std;
typedef long long ll; typedef pair<int,int> pii; typedef pair<ll,ll> pll;
#define ff first
#define ss second
#define pb emplace_back
#define AI(x) begin(x),end(x)
template<class I>bool chmax(I&a,I b){return a<b?(a=b,true):false;}
template<class I>bool chmin(I&a,I b){return b<a?(a=b,true):false;} 
#ifdef OWO
#define debug(args...) SDF(#args, args)
#define OIU(args...) ostream& operator<<(ostream&O,args)
#define LKJ(S,B,E,F) template<class...T>OIU(S<T...>s){O<<B;int c=0;for(auto i:s)O<<(c++?", ":"")<<F;return O<<E;}
LKJ(vector,'[',']',i)LKJ(deque,'[',']',i)LKJ(set,'{','}',i)LKJ(multiset,'{','}',i)LKJ(unordered_set,'{','}',i)LKJ(map,'{','}',i.ff<<':'<<i.ss)LKJ(unordered_map,'{','}',i.ff<<':'<<i.ss)
template<class...T>void SDF(const char* s,T...a){int c=sizeof...(T);if(!c){cerr<<"\033[1;32mvoid\033[0m\n";return;}(cerr<<"\033[1;32m("<<s<<") = (",...,(cerr<<a<<(--c?", ":")\033[0m\n")));}
template<class T,size_t N>OIU(array<T,N>a){return O<<vector<T>(AI(a));}template<class...T>OIU(pair<T...>p){return O<<'('<<p.ff<<','<<p.ss<<')';}template<class...T>OIU(tuple<T...>t){return O<<'(',apply([&O](T...s){int c=0;(...,(O<<(c++?", ":"")<<s));},t),O<<')';}
#else
#pragma GCC optimize("Ofast")
#define debug(...) ((void)0)
#endif
 
struct EEK {
	int w, u, v;
	EEK (int w, int u, int v) : w(w), u(u), v(v) {}
	const bool operator < (const EEK &oth) const {
		return w < oth.w;
	}
};
struct DSU {
	int n; vector<int> f;
	DSU (int nn) : n(nn), f(nn) { iota(AI(f), 0); }
	int F(int u) { return u == f[u] ? u : f[u] = F(f[u]); }
};
 
signed main(){
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
 
	int N; cin >> N;
	vector<int> P(N); for(int &i: P) cin >> i;
 
	sort(AI(P));
	P.erase(unique(AI(P)), end(P));
	N = P.size();
 
	vector<EEK> e;
	for(int i = 0; i < N-1; ++i){
		for(int j = P[i]; j <= P.back(); j += P[i]){
			int p = lower_bound(begin(P)+i+1, end(P), j) - begin(P);
			int r = P[p] / P[i];
			e.pb(P[p] - P[i] * r, i, p);
			j = P[i] * r;
		}
	}
	sort(AI(e));
 
	DSU dsu(N);
	int ans = 0;
	int cnt = N;
	for(auto [w, u, v]: e){
		u = dsu.F(u);
		v = dsu.F(v);
		if(u != v){
			dsu.f[v] = u;
			ans += w;
			--cnt;
		}
		if(cnt == 1) break;
	}
	cout << ans << '\n';
 
	return 0;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 22 ms 3520 KB Output is correct
3 Correct 2 ms 588 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 460 KB Output is correct
2 Correct 6 ms 1224 KB Output is correct
3 Correct 2 ms 588 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 460 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 172 ms 13100 KB Output is correct
2 Correct 575 ms 49992 KB Output is correct
3 Correct 217 ms 25492 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 3488 KB Output is correct
2 Correct 315 ms 50076 KB Output is correct
3 Correct 163 ms 13200 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 392 ms 50032 KB Output is correct
2 Correct 756 ms 99272 KB Output is correct
3 Correct 205 ms 25368 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 6708 KB Output is correct
2 Correct 709 ms 99228 KB Output is correct
3 Correct 196 ms 25412 KB Output is correct

Subtask #8
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 221 ms 25372 KB Output is correct
2 Correct 3381 ms 394804 KB Output is correct
3 Correct 251 ms 25368 KB Output is correct

Subtask #9
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 202 ms 25360 KB Output is correct
2 Correct 4940 ms 394972 KB Output is correct
3 Correct 294 ms 25368 KB Output is correct

Subtask #10
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 3520 KB Output is correct
2 Correct 4882 ms 395116 KB Output is correct
3 Correct 225 ms 26028 KB Output is correct