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Submission #886894

# Submission time Handle Problem Language Result Execution time Memory
886894 2023-12-13T06:44:02 Z beaboss Sirni (COCI17_sirni) C++14
112 / 140
 3518 ms 786432 KB 
// Source: https://oj.uz/problem/view/COCI17_sirni
// 

#include "bits/stdc++.h"

using namespace std;

#define s second
#define f first
#define pb push_back

typedef long long ll;

typedef pair<ll, ll> pii;
typedef vector<pii> vpii;

typedef vector<ll> vi;

#define FOR(i, a, b) for (ll i = (a); i<b; i++)

bool ckmin(ll& a, ll b){ return b < a ? a = b, true : false; }

bool ckmax(ll& a, ll b){ return b > a ? a = b, true : false; }

set<ll> uni;

const ll P = 1e7 + 10;

vpii ed[P];

struct DSU {
	vector<ll> e;
	DSU(ll N) { e = vector<ll>(N, -1); }

	// get representive component (uses path compression)
	ll get(ll x) { return e[x] < 0 ? x : e[x] = get(e[x]); }

	bool same_set(ll a, ll b) { return get(a) == get(b); }

	ll size(ll x) { return -e[get(x)]; }

	bool unite(ll x, ll y) {  // union by size
		x = get(x), y = get(y);
		if (x == y) return false;
		if (e[x] > e[y]) swap(x, y);
		e[x] += e[y];
		e[y] = x;
		return true;
	}
};

DSU dsu(P);

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

	ll n;
	cin >> n;

	FOR(i, 1, n + 1) {
		ll k;
		cin >> k;
		uni.insert(k);
	}

	for (auto cur: uni) {

		for (ll e = cur; e < P; e += cur) {
			

			// ll ub = e + cur - 1;

			auto it = uni.lower_bound(e);
			if (e == cur) it = uni.upper_bound(e);

			if (it == uni.end()) continue;
			int val = *it;
			
			if (val < e + cur) ed[val % cur].pb({cur, val});


			// cout << cur << val << endl;

			// if (it == uni.begin()) continue;
			// ll val = *prev(it, 1);
			// while (val >= e) {
			// 	cout << cur << val << endl;
			// 	ed.pb({val - e, {cur, val}});
			// 	ub = (e + val) / 2;

			// 	if (val == e) break;

			// 	it = uni.upper_bound(ub);
			// 	if (it == uni.begin()) break;
			// 	val = *prev(it, 1);
			// } 
		}
	}


	ll sz = 0;

	FOR(c, 0, P) {
		for (auto e: ed[c]) 
			if (dsu.unite(e.f, e.s)) sz += c;
	
	}

	cout << sz << endl;


}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 313680 KB Output is correct
2 Correct 124 ms 318328 KB Output is correct
3 Correct 80 ms 313936 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 145 ms 313680 KB Output is correct
2 Correct 485 ms 314960 KB Output is correct
3 Correct 80 ms 313860 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 313544 KB Output is correct
2 Correct 77 ms 313432 KB Output is correct
3 Correct 78 ms 313820 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 392 ms 336888 KB Output is correct
2 Correct 1153 ms 398380 KB Output is correct
3 Correct 572 ms 346788 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 116 ms 317268 KB Output is correct
2 Correct 459 ms 356072 KB Output is correct
3 Correct 521 ms 336124 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 777 ms 363468 KB Output is correct
2 Correct 1581 ms 429688 KB Output is correct
3 Correct 578 ms 345716 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 319 ms 321620 KB Output is correct
2 Correct 1350 ms 410604 KB Output is correct
3 Correct 540 ms 342812 KB Output is correct

Subtask #8
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 303 ms 340388 KB Output is correct
2 Correct 3322 ms 767600 KB Output is correct
3 Correct 339 ms 345720 KB Output is correct

Subtask #9
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 305 ms 341384 KB Output is correct
2 Runtime error 3518 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #10
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 106 ms 318896 KB Output is correct
2 Runtime error 3154 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -