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Submission #844142

# Submission time Handle Problem Language Result Execution time Memory
844142 2023-09-05T10:06:54 Z amine_aroua Sirni (COCI17_sirni) C++17
56 / 140
 1832 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]);
    }
    if(n <= 1000)
    {
        vector<tuple<int , int , int>> edg;
        fore(i , n)
        {
            forr(j, i + 1, n - 1)
            {
                edg.pb({min(v[i]%v[j] , v[j]%v[i]) , i , j});
            }
        }
        DSU dsu(n);
        int ans =0;
        for(auto [c , U , V] : edg)
        {
            if(dsu.unite(U , V))
            {
                ans+=c;
            }
        }
        cout<<ans<<nl;
    }
    else
    {
        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<<nl;
    }

}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 12 ms 14536 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 11 ms 14532 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 12 ms 14532 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 132 ms 95860 KB Output is correct
2 Correct 402 ms 210948 KB Output is correct
3 Correct 204 ms 179692 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 35576 KB Output is correct
2 Correct 198 ms 171184 KB Output is correct
3 Correct 129 ms 87360 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 268 ms 169924 KB Output is correct
2 Correct 543 ms 350456 KB Output is correct
3 Correct 180 ms 121488 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 25764 KB Output is correct
2 Correct 510 ms 353736 KB Output is correct
3 Correct 172 ms 125728 KB Output is correct

Subtask #8
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 217 ms 311112 KB Output is correct
2 Runtime error 1292 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 232 ms 322676 KB Output is correct
2 Runtime error 1208 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 92 ms 248048 KB Output is correct
2 Runtime error 1832 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -