oj.uz

Submission #1022570

# Submission time Handle Problem Language Result Execution time Memory
1022570 2024-07-13T18:22:49 Z dpsaveslives Sirni (COCI17_sirni) C++17
42 / 140
 729 ms 786432 KB 
#include <bits/stdc++.h>
using namespace std;
struct DSU{
    int N;
    vector<int> d;
    void init(int n){
        N = n;
        d = vector<int>(N,-1);
    }
    int finden(int x){
        if(d[x] < 0) return x;
        return finden(d[x]);
    }
    bool unite(int a, int b){
        a = finden(a), b = finden(b);
        if(a == b) return false;
        if(d[a] > d[b]){
            swap(a,b);
        } //absolute of d[a] is smaller than absolute of d[b], so there are less in a than in b, although we want to add b to a
        d[a] += d[b]; d[b] = a;
        return true;
    }
}D;
struct edge{
    int u,v,w;
    bool operator<(const edge &b){
        return w < b.w;
    }
};
int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int N; cin >> N;
    vector<int> P(N);
    for(int i = 0;i<N;++i) cin >> P[i];
    D.init(N);
    sort(P.begin(),P.end());
    vector<edge> edges;
    for(int i = 0;i<N;++i){
        for(int j = i+1;j<N;++j){ //P[j] >= P[i]
            edge e; e.u = i; e.v = j; e.w = P[j]%P[i];
            edges.push_back(e);
        }
    }
    sort(edges.begin(),edges.end());
    int ans = 0, cnt = N-1;
    for(int i = 0;i<edges.size();++i){
        if(D.unite(edges[i].u,edges[i].v)){
            ans += edges[i].w;
            --cnt;
        }
        if(cnt == 0) break;
    }
    cout << ans << "\n";
    return 0;
}

Compilation message

sirni.cpp: In function 'int main()':
sirni.cpp:47:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |     for(int i = 0;i<edges.size();++i){
      |                   ~^~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 6604 KB Output is correct
2 Correct 29 ms 6604 KB Output is correct
3 Correct 35 ms 6764 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 6600 KB Output is correct
2 Correct 28 ms 6604 KB Output is correct
3 Correct 35 ms 6604 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 6600 KB Output is correct
2 Correct 28 ms 6600 KB Output is correct
3 Correct 37 ms 6600 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 729 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 698 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 698 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 679 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 693 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 705 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 721 ms 786432 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -