Submission #544338

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
544338	2022-04-01T17:51:02 Z	Olympia	Sirni (COCI17_sirni)	C++17	42 / 140	955 ms	786432 KB

sirni

#include <vector>
#include <algorithm>
#include <iostream>
#include <set>
#include <cmath>
#include <map>
#include <random>
#include <cassert>
#include <ctime>
#include <bitset>
#include <stack>
#include <cstdlib>
#include <queue>
#include <stdint.h>
#include <vector>
#include <cassert>
#include <numeric>
#include <iostream>
#include <algorithm>
#include <functional>
#include <cstdio>
#include <limits.h>

#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")

using namespace std;
class DisjointSetUnion {
protected:
    vector<int> parent;
    vector<int> compSize;
    const int n;
    int connectedComponents;
public:
    int getConnectedComponents() const {
        return connectedComponents;
    }

public:
    DisjointSetUnion(int sz) : n(sz), connectedComponents(sz) {
        parent.resize(sz), compSize.resize(sz);
        for (int i = 0; i < n; i++) {
            parent[i] = i, compSize[i] = 1;
        }
    }

    int find_head(int x) const {
        int cur = x;
        while (cur != parent[cur]) {
            cur = parent[cur];
        }
        return cur;
    }

    void join(int x, int y) {
        x = find_head(x);
        y = find_head(y);
        if (x == y) {
            return;
        }
        if (compSize[x] > compSize[y]) {
            swap(x, y);
            //ensures that compSize[x1] <= compSize[y1]
        }
        parent[x] = y;
        compSize[y] += compSize[x];
        connectedComponents--;
    }

    bool comp(int x, int y) {
        return (find_head(x) == find_head(y));
    }
};
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int N;
    cin >> N;
    vector<int> v(N);
    DisjointSetUnion dsu(N);
    for (int i = 0; i < N; i++) {
        cin >> v[i];
    }
    vector<pair<int,pair<int,int>>> vec;
    for (int i = 0; i < N; i++) {
        for (int j = i + 1; j < N; j++) {
            vec.emplace_back(min(v[i] % v[j], v[j] % v[i]), make_pair(i, j));
        }
    }
    sort(vec.begin(), vec.end());
    int64_t ans = 0;
    for (int i = 0; i < vec.size(); i++) {
        if (dsu.comp(vec[i].second.first, vec[i].second.second)) {
            continue;
        }
        dsu.join(vec[i].second.first, vec[i].second.second);
        ans += vec[i].first;
    }
    cout << ans;

}

Compilation message

sirni.cpp:25: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   25 | #pragma GCC optimization ("O3")
      | 
sirni.cpp:26: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   26 | #pragma GCC optimization ("unroll-loops")
      | 
sirni.cpp: In function 'int main()':
sirni.cpp:93:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   93 |     for (int i = 0; i < vec.size(); i++) {
      |                     ~~^~~~~~~~~~~~

Subtask #1

14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	51 ms	6596 KB	Output is correct
2	Correct	72 ms	6580 KB	Output is correct
3	Correct	55 ms	6596 KB	Output is correct

Subtask #2

14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	63 ms	6596 KB	Output is correct
2	Correct	69 ms	6596 KB	Output is correct
3	Correct	55 ms	6528 KB	Output is correct

Subtask #3

14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	58 ms	6596 KB	Output is correct
2	Correct	51 ms	6584 KB	Output is correct
3	Correct	59 ms	6596 KB	Output is correct

Subtask #4

0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	955 ms	786432 KB	Execution killed with signal 9
2	Halted	0 ms	0 KB	-

Subtask #5

0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	841 ms	786432 KB	Execution killed with signal 9
2	Halted	0 ms	0 KB	-

Subtask #6

0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	834 ms	786432 KB	Execution killed with signal 9
2	Halted	0 ms	0 KB	-

Subtask #7

0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	785 ms	786432 KB	Execution killed with signal 9
2	Halted	0 ms	0 KB	-

Subtask #8

0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	780 ms	786432 KB	Execution killed with signal 9
2	Halted	0 ms	0 KB	-

Subtask #9

0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	871 ms	786432 KB	Execution killed with signal 9
2	Halted	0 ms	0 KB	-

Subtask #10

0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	851 ms	786432 KB	Execution killed with signal 9
2	Halted	0 ms	0 KB	-