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Submission #715980

# Submission time Handle Problem Language Result Execution time Memory
715980 2023-03-28T16:27:06 Z vjudge1 Sirni (COCI17_sirni) C++17
140 / 140
 3491 ms 785336 KB 
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const int MAX = 1e7 + 7;
int parent[MAX];
int _find(int i){
    if(parent[i] < 0) return i;
    return parent[i] = _find(parent[i]);
}
bool _union(int u, int v){
    u = _find(u), v = _find(v);
    if(u == v) return false;
    if(parent[u] > parent[v]) swap(u, v);
    parent[u] += parent[v];
    parent[v] = u;
    return true;
}
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int n;
    cin>>n;
    vector<int> P(n);
    for(auto& i : P) cin>>i;
    sort(P.begin(), P.end());
    int _max = P[n - 1];
    int _next[MAX] = {0};

    for(auto i : P) _next[i] = i;
    for (int i = _max - 1; i >= 0; i--)
    {
        if(_next[i] != 0) continue;
        _next[i] = _next[i + 1];
    }

    vector<pair<int, int>> edges[MAX];
    for(int i = 0; i < n; i++){
        if(i != 0 && P[i - 1] == P[i]) continue;
        int a = P[i];
        if(a == _max) continue;
        for (int j = a; j <= _max; j += a)
        {
            int b;
            if(j == P[i]) b = _next[j + 1];
            else b = _next[j];
            edges[b % a].push_back({a, b});
        }
        
    } 
    memset(parent, -1, sizeof(parent));
    int ans = 0;
    for(int i = 0; i <= (_max / 2); i++){
        for(auto& j : edges[i]){
            if(_union(j.first, j.second)) ans += i;
        }
    }
    cout<<ans;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 194 ms 313548 KB Output is correct
2 Correct 301 ms 342788 KB Output is correct
3 Correct 206 ms 313704 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 158 ms 313500 KB Output is correct
2 Correct 1463 ms 708072 KB Output is correct
3 Correct 204 ms 314216 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 198 ms 313456 KB Output is correct
2 Correct 199 ms 313548 KB Output is correct
3 Correct 206 ms 313612 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 222 ms 323336 KB Output is correct
2 Correct 309 ms 351764 KB Output is correct
3 Correct 243 ms 334340 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 170 ms 315436 KB Output is correct
2 Correct 295 ms 336612 KB Output is correct
3 Correct 217 ms 323440 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 292 ms 334776 KB Output is correct
2 Correct 375 ms 369008 KB Output is correct
3 Correct 236 ms 332500 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 179 ms 316988 KB Output is correct
2 Correct 356 ms 369940 KB Output is correct
3 Correct 235 ms 334072 KB Output is correct

Subtask #8
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 323 ms 326620 KB Output is correct
2 Correct 1888 ms 671564 KB Output is correct
3 Correct 356 ms 329316 KB Output is correct

Subtask #9
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 351 ms 330896 KB Output is correct
2 Correct 3377 ms 785336 KB Output is correct
3 Correct 548 ms 379800 KB Output is correct

Subtask #10
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 222 ms 315728 KB Output is correct
2 Correct 3491 ms 672960 KB Output is correct
3 Correct 251 ms 336152 KB Output is correct