Submission #115173

#	Time	Username	Problem	Language	Result	Execution time	Memory
115173		izanbf	Zamjena (COCI18_zamjena)	C++14	14 / 70	12 ms	1024 KiB

zamjena

#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define D(x) cerr << #x << " = " << (x) << ", "
template <typename T> ostream& operator<<(ostream& _o_, const vector<T>& _v_){ \
 if(!_v_.empty()){_o_<<'[';copy(_v_.begin(),_v_.end(),ostream_iterator<T>(_o_,", "));_o_<<"\b\b]";}return _o_;}
#define rep(i, begin, end) for (__typeof(end) i = (begin) - ((begin) > (end)); i != (end) - ((begin) > (end)); i += 1 - 2 * ((begin) > (end)))
typedef unsigned int uint;
typedef unsigned long ul;
typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
typedef unsigned char uchar;
struct secure_hash {
 static uint64_t splitmix64(uint64_t x) {
  x += 0x9e3779b97f4a7c15; x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9; x = (x ^ (x >> 27)) * 0x94d049bb133111eb; return x ^ (x >> 31); }
 size_t operator()(uint64_t x) const {
  static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count(); return splitmix64(x + FIXED_RANDOM); } };
template<typename T> using V = vector<T>;
template<typename T, typename U> using umap = unordered_map<T,U>;
template<typename T> using uset = unordered_set<T>;
template<typename T> using min_heap = priority_queue<T, vector<T>, greater<T>>;
template<typename T> using max_heap = priority_queue<T>;

int parent[100000], size[100000], value[100000];
umap<string,int> idt;

bool is_num(string& s)
{
    for (char c : s) {
        if (not isdigit(c)) return false;
    }
    return true;
}   

int get_id(string& s)
{
    auto it = idt.find(s);
    if (it == idt.end()) {
        int id = idt.size();
        parent[id] = id;
        size[id] = 1;
        value[id] = (is_num(s) ? stoi(s) : -1);
        idt[s] = id;
        return id;
    }
    return it->second;
}

int ufind(int u)
{
    if (parent[u] != u) parent[u] = ufind(parent[u]);
    return parent[u];
}

bool ujoin(int u, int v)
{
    u = ufind(u), v = ufind(v);
    if (u != v) {
        if (size[u] < size[v]) swap(u, v);
        if (value[u] != -1 and value[v] != -1 and value[u] != value[v]) return false;
        parent[v] = u;
        size[u] += size[v];
    }
    return true;
}

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    V<V<int>> a(2, V<int>(n));
    rep(k,0,2) {
        rep(i,0,n) {
            string s;
            cin >> s;
            a[k][i] = get_id(s);
        }
    }
    rep(i,0,n) {
        if (not ujoin(a[0][i], a[1][i])) {
            cout << "NE" << endl; 
            exit(0);
        }
    }
    cout << "DA" << endl;
}

• Subtask 1: 14 / 14
• Subtask 2: 0 / 14
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 14