oj.uz

Submission #844132

# Submission time Handle Problem Language Result Execution time Memory
844132 2023-09-05T10:00:56 Z amine_aroua Sirni (COCI17_sirni) C++17
84 / 140
 1840 ms 786432 KB 
#include <bits/stdc++.h>
//#pragma GCC optimize("O3")
//#pragma GCC optimize("unroll-loops")
using namespace std;
#define int long long
#define vi vector<int>
#define vl vector<long long>
#define vii vector<pair<int,int>>
#define vll vector<pair<long long,long long>>
#define pb push_back
#define ll long long
#define ld long double
#define nl '\n'
#define boost ios::sync_with_stdio(false)
#define mp make_pair
#define se second
#define fi first
#define fore(i, y) for(int i = 0; i < y; i++)
#define forr(i,x,y) for(int i = x;i<=y;i++)
#define forn(i,y,x) for(int i = y; i >= x; i--)
#define all(v) v.begin(),v.end()
#define sz(v) (int)v.size()
#define clr(v,k) memset(v,k,sizeof(v))
#define rall(v) v.rbegin() , v.rend()
#define pii pair<int,int>
#define pll pair<ll , ll>

const ll MOD = 1e9 + 7;
const ll INF = 1e18 + 1;

ll gcd(ll a , ll b) {return b ? gcd(b , a % b) : a ;} // greatest common divisor (gcd)
ll lcm(ll a , ll b) {return a * (b / gcd(a , b));} // least common multiple (lcm)

// HERE IS THE SOLUTION
struct DSU
{
    vi e;
    DSU(int n)
    {
        e.assign(n , -1);
    }
    int getPar(int x)
    {
        return (e[x] < 0 ? x : e[x] = getPar(e[x]));
    }
    int getSZ(int x)
    {
        return -e[getPar(x)];
    }
    bool unite(int u , int v)
    {
        u = getPar(u) , v = getPar(v);
        if(u == v)
            return 0;
        if(e[u] > e[v])
            swap(u , v);
        e[u]+=e[v];
        e[v] = u;
        return 1;
    }
};
signed main()
{
    boost;
    cin.tie(0);
    cout.tie(0);
    int n ;
    cin>>n;
    vi v(n);
    int mx = 0;
    fore(i , n)
    {
        cin>>v[i];
        mx = max(mx , v[i]);
    }
    sort(all(v));
    vector<vii> edg(mx + 1);
    fore(i , n - 1)
    {
        if(v[i] == v[i + 1])
        {
            edg[0].pb({i , i + 1});
        }
    }
    vector<bool> vis(mx + 1 , 0);
    fore(i , n)
    {
        if(vis[v[i]])
            continue;
        vis[v[i]] = 1;
        int x = v[i];
        for(int j = x;j<=mx;j+=x)
        {
            int idx ;
            if(j == x)
                idx = upper_bound(all(v) , j) - v.begin();
            else
                idx = lower_bound(all(v) , j) - v.begin();
            if(idx < n && idx >= 0)
            {
                edg[v[idx]%x].pb({i, idx});
            }
        }
    }
    vector<tuple<int , int , int>> sorted;
    fore(i , mx + 1)
    {
        for(auto [a , b] : edg[i])
        {
            sorted.pb({i , a , b});
        }
    }
    DSU dsu(n);
    int ans = 0;
    for(auto [c , U , V] : sorted)
    {
        if(dsu.unite(U , V))
        {
            ans+=c;
        }
    }
    cout<<ans;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 236620 KB Output is correct
2 Correct 179 ms 392688 KB Output is correct
3 Correct 78 ms 236876 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Runtime error 564 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 82 ms 236816 KB Output is correct
2 Correct 69 ms 236112 KB Output is correct
3 Correct 70 ms 237072 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 137 ms 95568 KB Output is correct
2 Correct 399 ms 214196 KB Output is correct
3 Correct 200 ms 180936 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 35056 KB Output is correct
2 Correct 203 ms 172556 KB Output is correct
3 Correct 123 ms 86020 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 265 ms 175180 KB Output is correct
2 Correct 544 ms 349680 KB Output is correct
3 Correct 172 ms 121228 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 26020 KB Output is correct
2 Correct 490 ms 348404 KB Output is correct
3 Correct 177 ms 127776 KB Output is correct

Subtask #8
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 209 ms 310556 KB Output is correct
2 Runtime error 1348 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #9
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 225 ms 322396 KB Output is correct
2 Runtime error 1213 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 90 ms 247860 KB Output is correct
2 Runtime error 1840 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -