Submission #877659

#	Time	Username	Problem	Language	Result	Execution time	Memory
877659		noiaint	Pictionary (COCI18_pictionary)	C++17	140 / 140	37 ms	10916 KiB

pictionary

#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif

#define file ""

#define mp make_pair
#define fi first
#define se second
#define all(x) x.begin(), x.end()

#define bit(x) (1LL << (x))
#define getbit(x, i) (((x) >> (i)) & 1)
#define popcount __builtin_popcountll

mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count());
int rand(int l, int r) {
    return l + rd() % (r - l + 1);
}

const int N = 1e6 + 5;
const int mod = (int)1e9 + 7; // 998244353;
const int lg = 25; // lg + 1
const int oo = 1e9;
const long long ooo = 1e18;

template<class X, class Y> bool mini(X &a, Y b) {
    return a > b ? (a = b, true) : false;
}
template<class X, class Y> bool maxi(X &a, Y b) {
    return a < b ? (a = b, true) : false;
}
void add(int &a, int b) {
    a += b;
    if (a >= mod) a -= mod;
    if (a < 0) a += mod;
}

int n, m, q;
int par[N], w[N], moment[N];

int getpar(int x) {
    return x == par[x] ? x : getpar(par[x]);
}

bool unite(int x, int y, int t) {
    x = getpar(x);
    y = getpar(y);
    if (x == y) return false;
    if (w[x] < w[y]) swap(x, y);
    par[y] = x;
    w[x] += w[y];
    moment[y] = t;
    return true;
}

void addEdge(int id) {
    int k = m - id + 1;
    for (int i = k + k; i <= n; i += k) unite(i, k, id);
}

void process() {
    cin >> n >> m >> q;
    for (int i = 1; i <= n; ++i) {
        par[i] = i;
        w[i] = 1;
        moment[i] = oo;
    } 

    for (int i = 1; i <= m; ++i) addEdge(i);

    while (q--) {
        int x, y;
        cin >> x >> y;
        int res = 0;
        while (x != y) {
            if (moment[x] > moment[y]) swap(x, y);
            res = max(res, moment[x]);
            x = par[x];
        }

        cout << res << '\n';
    }
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    // freopen(file".inp", "r", stdin);
    // freopen(file".out", "w", stdout);

    int tc = 1;
    // cin >> tc;
    
    while (tc--) {
        process();
    }

    return 0;
}

/*

*/

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 14 / 14
• Subtask 5: 14 / 14
• Subtask 6: 14 / 14
• Subtask 7: 14 / 14
• Subtask 8: 14 / 14
• Subtask 9: 14 / 14
• Subtask 10: 14 / 14