Submission #1126024

#	Time	Username	Problem	Language	Result	Execution time	Memory
1126024		codexistent	Sirni (COCI17_sirni)	C++20	42 / 140	5119 ms	790816 KiB

sirni

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define MAXN 100005
#define MAXC 10000005
#define FOR(i, a, b) for(ll i = a; i <= b; i++)
#define f first
#define s second

ll n, c[MAXN], p[MAXN], sz[MAXN], r = 0;
priority_queue<pair<ll, pair<ll, ll>>> pq;

ll find(ll x) { return (p[x] == x) ? x : (p[x] = find(p[x])); }
bool onion(ll a, ll b){
    a = find(a), b = find(b);
    if(a == b) return false;

    if(sz[a] < sz[b]) swap(a, b);
    p[a] = p[b] = a;
    sz[a] += sz[b];
    return true;
}

int main(){
    cin >> n;
    FOR(i, 1, n) {
        cin >> c[i];
        p[i] = i, sz[i] = 1;
    }
    sort(c + 1, c + 1 + n);

    ll n2 = 1;
    FOR(i, 1, n) c[n2] = c[i], n2 += (i != n && c[i + 1] != c[i]); 
    n = n2;

    FOR(i, 1, n){
        ll j = i + 1;
        for(ll mn = c[i]; mn < MAXC; mn += c[i]) if(j <= n && c[j] < mn + c[i]) {
            ll lo = j, hi = n + 1;
            while(lo < hi){
                ll md = (lo + hi) / 2;
                if(mn <= c[md] || md == n + 1){
                    hi = md;
                }else{
                    lo = md + 1;
                }
            }

            if(j != n + 1) pq.push({-(c[lo] % c[i]), {i, lo}}), j = lo + 1;
        }
    }

    while(pq.size()){
        auto pqi = pq.top(); pq.pop();
        r -= pqi.f * onion(pqi.s.f, pqi.s.s);
    }

    cout << r << endl;
}

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