oj.uz

Submission #988922

# Submission time Handle Problem Language Result Execution time Memory
988922 2024-05-26T21:26:45 Z canadavid1 Monthly railway pass (LMIO18_menesinis_bilietas) C++17
0 / 100
 197 ms 29788 KB 
#include <iostream>
#include <vector>
#include <unordered_set>


struct uf
{
private:
    std::vector<int> data;
public:
    int find(int val)
    {
        if (data[val] < 0) return val;
        return data[val] = find(data[val]);
    }
    uf(int s) : data(s,-1) {}
    bool same(int a, int b)
    {
        return find(a)==find(b);
    }
    bool unite(int a, int b)
    {
        a = find(a);
        b = find(b);
        if (a==b) return false;
        if (-data[a] < -data[b]) std::swap(a,b);
        data[a] += data[b];
        data[b] = a;
        return true;
    }
    int size(int a)
    {
        return -data[find(a)];
    }
};

int main()
{
    int N,M;
    std::cin >> N >> M;
    uf uf(N);
    std::vector<std::pair<int,int>> n;
    for(int i = 0; i < M; i++)
    {
        int u,v; char c;
        std::cin >> u >> v >> c;
        u--;v--;
        if(c=='T') uf.unite(u,v);
        else n.emplace_back(u,v);
    }
    std::vector<std::unordered_set<int>> neigh(N);
    for(auto[u,v] : n)
    {
        u = uf.find(u);
        v = uf.find(v);
        if(u==v) continue;
        neigh[u].insert(v);
        neigh[v].insert(u);
    }
    std::vector<int> Size(N);
    for(int i = 0; i < N; i++)
    {
        if(i!=uf.find(i)) continue;
        auto& sz = Size[i];
        sz = uf.size(i);
        for(auto n : neigh[i]) sz += uf.size(n);
    }
    int m = 0;
    for(auto i : Size) m = std::max(m,i);
    int ct = 0;
    for(int i = 0; i < N; i++) if(Size[i]==m) ct += uf.size(i);
    std::cout << ct << "\n";    

}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 197 ms 25936 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Incorrect 1 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 12 ms 29788 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 197 ms 25936 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Incorrect 1 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -