oj.uz

Submission #136403

# Submission time Handle Problem Language Result Execution time Memory
136403 2019-07-25T08:46:30 Z darkkcyan Sirni (COCI17_sirni) C++14
112 / 140
 5000 ms 434224 KB 
#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
#define maxval ((llong)1e7+10)
int n;
int a[maxn];
int lower_b[maxval] = {0};

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);

    int f = 0;
    rep(i, n) {
        for (; f <= a[i]; ++f) lower_b[f] = i;
    }

    min_priority_queue<tuple<int, int, int>> pq;
    rep(i, n) {
        for (int k = 1; k * a[i] <= a[n - 1]; ++k) {
            int t = lower_b[k * a[i]];
            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
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 39672 KB Output is correct
2 Correct 59 ms 42600 KB Output is correct
3 Correct 39 ms 39736 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 632 KB Output is correct
2 Correct 41 ms 40320 KB Output is correct
3 Correct 50 ms 39800 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 39600 KB Output is correct
2 Correct 43 ms 39544 KB Output is correct
3 Correct 38 ms 39672 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 452 ms 17380 KB Output is correct
2 Correct 1237 ms 54340 KB Output is correct
3 Correct 233 ms 29680 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 7656 KB Output is correct
2 Correct 335 ms 54236 KB Output is correct
3 Correct 424 ms 15560 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 932 ms 54392 KB Output is correct
2 Correct 859 ms 103544 KB Output is correct
3 Correct 236 ms 29664 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 123 ms 7776 KB Output is correct
2 Correct 840 ms 103568 KB Output is correct
3 Correct 217 ms 29788 KB Output is correct

Subtask #8
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 643 ms 64944 KB Output is correct
2 Correct 4256 ms 434152 KB Output is correct
3 Correct 660 ms 64716 KB Output is correct

Subtask #9
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 381 ms 64800 KB Output is correct
2 Execution timed out 5033 ms 434216 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #10
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 130 ms 42988 KB Output is correct
2 Execution timed out 5097 ms 434224 KB Time limit exceeded
3 Halted 0 ms 0 KB -