oj.uz

Submission #89190

# Submission time Handle Problem Language Result Execution time Memory
89190 2018-12-10T22:29:26 Z jasony123123 Sirni (COCI17_sirni) C++11
56 / 140
 429 ms 347812 KB 
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
#include <unordered_map>
//#include <ext/pb_ds/tree_policy.hpp>
//#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
//using namespace __gnu_pbds;
#define FOR(i,start,end) for(int i=start;i<(int)(end);i++)
#define FORE(i,start,end) for(int i=start;i<=(int)end;i++)
#define RFOR(i,start,end) for(int i = start; i>end; i--)
#define RFORE(i,start,end) for(int i = start; i>=end; i--)
#define all(a) a.begin(), a.end()
#define mt make_tuple
#define v vector
#define sf scanf
#define pf printf
#define dvar(x) cout << #x << " := " << x << "\n"
#define darr(x,n) FOR(i,0,n) cout << #x << "[" << i << "]" << " := " << x[i] << "\n"
typedef long long ll;
typedef long double ld;
typedef pair<int, int > pii;
typedef pair<ll, ll> pll;
//template <class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<class T> void minn(T &a, T b) { a = min(a, b); }
template<class T> void maxx(T &a, T b) { a = max(a, b); }
inline void io() {
#ifdef LOCAL_PROJECT 
	freopen("input.in", "r", stdin); freopen("output.out", "w", stdout);
#else 
	/* online submission */
#endif 
	ios_base::sync_with_stdio(false); cin.tie(NULL);
}
/**************************COCI 2016-2017 R6 P4*************************/

template <int SZ> struct UF {
	int N; // Vertices 0...N-1
	int par[SZ], compsz[SZ]; // parent of i, size of component
	UF() {
		FOR(i, 0, SZ) par[i] = i, compsz[i] = 1;
	}
	int find(int x) { // path compression
		if (par[x] != x) par[x] = find(par[x]);
		return par[x];
	}
	bool unite(int x, int y) { // unite by rank. return TRUE if united. FALSE if already same component
		x = find(x), y = find(y);
		if (x == y) return false;
		if (compsz[x] < compsz[y]) swap(x, y); // now x is the larger component
		compsz[x] += compsz[y], par[y] = x;
		return true;
	}
};

const int MAXP = 5000000;
int N, M;
v<int> P;
int nxt[MAXP];
v<pii> edges;
v<pii> edgeSorted[MAXP];

UF<100000> uf;

int main() {
	io();

	// input
	cin >> N;
	P.resize(N);
	FOR(i, 0, N) cin >> P[i];
	sort(P.begin(), P.end());
	P.erase(unique(P.begin(), P.end()), P.end());
	N = P.size();
	M = P.back();
	assert(M < MAXP);

	// compute nxt
	for (int i = M, j = P.size()-1; i >= P.front(); i--) {
		assert(j >= 0);
		if (j>=0 && i == P[j])
			nxt[i] = j--;
		else
			nxt[i] = nxt[i + 1];
	}

	// compute edges
	FOR(i, 0, N) {
		edges.push_back({ i, nxt[P[i] + 1] });
		for (int k = P[i] + P[i]; k <= M; k += P[i])
			edges.push_back({ i, nxt[k] });
	}

	// init count sort
	for (auto &e : edges)
		edgeSorted[P[e.second] % P[e.first]].push_back(e);

	// mst
	int num = 0;
	ll mstcost = 0;
	FORE(c, 0, M) {
		for (pii e : edgeSorted[c]) {
			if (uf.unite(e.first, e.second)) {
				mstcost += (ll)(c);
				num++;
			}
			if (num == N - 1)break;
		}
	}

	cout << mstcost << "\n";
	return 0;
}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 223 ms 236920 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 110 ms 237160 KB Output is correct
2 Runtime error 245 ms 237296 KB Execution killed with signal 11 (could be triggered by violating memory limits)
3 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 273 ms 237296 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 220 ms 260456 KB Output is correct
2 Correct 342 ms 315820 KB Output is correct
3 Correct 269 ms 315820 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 140 ms 315820 KB Output is correct
2 Correct 312 ms 315820 KB Output is correct
3 Correct 198 ms 315820 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 270 ms 315820 KB Output is correct
2 Correct 429 ms 344692 KB Output is correct
3 Correct 241 ms 344692 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 134 ms 344692 KB Output is correct
2 Correct 406 ms 347812 KB Output is correct
3 Correct 216 ms 347812 KB Output is correct

Subtask #8
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 259 ms 347812 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #9
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 262 ms 347812 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #10
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 242 ms 347812 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -