제출 #136402

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
136402		darkkcyan	Sirni (COCI17_sirni)	C++14	112 / 140	5117 ms	395232 KiB

sirni

#include <bits/stdc++.h>
using namespace std;
using namespace std::placeholders;

// #define rand __rand
// mt19937 rand(chrono::system_clock::now().time_since_epoch().count());  // or mt19937_64
#define llong long long 
#define xx first
#define yy second
#define len(x) ((int)x.size())
#define rep(i,n) for (int i = -1; ++ i < n; )
#define rep1(i,n) for (int i = 0; i ++ < n; )
#define all(x) x.begin(), x.end()

template<class T>
using min_priority_queue = priority_queue<T, vector<T>, greater<T>>;

#define maxn 101010
int n;
int a[maxn];

int dsu[maxn];
int n_set;
int findp(int u) { return u == dsu[u] ? u : dsu[u] = findp(dsu[u]); }
void join(int u, int v) {
    u = findp(u);
    v = findp(v);
    if (u == v) return ;
    if (rand() & 1) swap(u, v);
    dsu[u] = v;
    --n_set;
}
int main(void) {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n;
    rep(i, n) cin >> a[i];
    sort(a, a + n);
    
    n = (int)(unique(a, a + n) - a);

    min_priority_queue<tuple<int, int, int>> pq;
    rep(i, n) {
        for (int k = 1; k * a[i] <= a[n - 1]; ++k) {
            auto t = lower_bound(a, a + n, k * a[i]) - a;
            if (t != n and a[t] == a[i]) ++t;
            if (t == n) break;
            pq.push({a[t] % a[i], i, t});
            k = a[t] / a[i];
        }
    }
    // clog << "nice" << endl;

    n_set = n;
    rep1(i, n) dsu[i] = i;

    llong ans = 0;
    while (n_set != 1) {
        int cost, src, cur;
        tie(cost, src, cur) = pq.top();
        pq.pop();

        if (findp(src) != findp(cur)) {
            ans += cost;
            join(src, cur);
        }

        int div = a[cur] / a[src];
        ++cur;
        if (cur == n or a[cur] / a[src] != div) continue;
        pq.push({a[cur] % a[src], src, cur});
    }
    cout << ans;

    return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 14 / 14
• Subtask 5: 14 / 14
• Subtask 6: 14 / 14
• Subtask 7: 14 / 14
• Subtask 8: 14 / 14
• Subtask 9: 0 / 14
• Subtask 10: 0 / 14