Submission #422032

#	Time	Username	Problem	Language	Result	Execution time	Memory
422032		_fractal	Nekameleoni (COCI15_nekameleoni)	C++14	140 / 140	2479 ms	55856 KiB

nekameleoni

#include <bits/stdc++.h>

#define pb push_back
#define ll long long
#define ld long double
#define x first
#define y second
#define mp make_pair
#define bug cout << "There\n";

const ll MAXN = 1e5 + 1, MAXM = 5e2 + 1, INF = 1e9, MOD = 1e9 + 7, CMOD = 998244353;
const ll P = 263, P2 = 570210983;
const ld eps = 1e-10;
using namespace std;

int n, k, m;
struct node{
    vector<pair<ll, ll>> pref, suff;
};
struct seg_tree{
    int ans[MAXN * 4];
    node t[MAXN * 4];
    void mg(int a, int b, int c, int pos){
        t[a].pref.clear(), t[a].suff.clear();
        ans[a] = min(ans[b], ans[c]);
        int uk, lenpref = t[b].pref.size(), lensuff2 = t[b].suff.size(), lensuff = t[c].suff.size(), lenpref2 = t[c].pref.size();
        uk = lenpref;
        ll mask = 0, mask2 = 0;
        for (int i = 0; i < lenpref; i++){
            mask |= (1ll << t[b].pref[i].x);
        }
        for (int i = 0; i < lensuff; i++){
            mask2 |= (1ll << t[c].suff[i].x);
            while (uk - 1 >= 0){
                ll xr = 0;
                if (uk != lenpref){
                    xr = (1ll << t[b].pref[uk].x);
                }
                if (((xr ^ mask) | mask2) == (1ll << k) - 1){
                    --uk;
                }
                else{
                    break;
                }
            }
            if (uk != lenpref){
                ans[a] = min(ans[a] * 1ll, t[c].suff[i].y - t[b].pref[uk].y + 1);
            }
        }
        //building pref
        bool was[k + 1];
        for (int i = 0; i < k; i++){
            was[i] = 0;
        }
        for (int i = 0; i < lenpref2; i++){
            t[a].pref.pb(t[c].pref[i]);
            was[t[c].pref[i].x] = 1;
        }
        for (int i = 0; i < lenpref; i++){
            if (was[t[b].pref[i].x] == 0)
                t[a].pref.pb(t[b].pref[i]);
        }
        for (int i = 0; i < k; i++){
            was[i] = 0;
        }
        for (int i = 0; i < lensuff2; i++){
            t[a].suff.pb(t[b].suff[i]);
            was[t[b].suff[i].x] = 1;
        }
        for (int i = 0; i < lensuff; i++){
            if (was[t[c].suff[i].x] == 0)
                t[a].suff.pb(t[c].suff[i]);
        }
    }
    void upd(int pos, int val, int posik, int v = 1, int tl = 1, int tr = n){
        if (tl == tr){
            ans[v] = (k == 1 ? 1 : INF);
            t[v].pref.clear(), t[v].suff.clear();
            t[v].pref.pb(mp(val, tl));
            t[v].suff.pb(mp(val, tl));
            return;
        }
        int tm = (tl + tr) >> 1;
        if (pos <= tm)
            upd(pos, val, posik, v + v, tl, tm);
        else
            upd(pos, val, posik, v + v + 1, tm + 1, tr);
        mg(v, v + v, v + v + 1, posik);
    }
    int get(){
        return ans[1];
    }
} rt;
 main(){
     ios_base::sync_with_stdio(false);
     cin.tie(0), cout.tie(0);
   // freopen("input.txt", "r", stdin);
  //  freopen("output.txt", "w", stdout);
    cin >> n >> k >> m;
    for (int i = 1, x; i <= n; ++i){
        cin >> x;
        --x;
        rt.upd(i, x, 0);
    }
    for (int i = 1, type, pos, val; i <= m; i++){
        cin >> type;
        if (type == 1){
            cin >> pos >> val;
            --val;
            rt.upd(pos, val, i);
        }
        else{
            int ans = rt.get();
            cout << (ans == INF ? -1 : ans) << '\n';
        }
    }
}
/*
*/

Compilation message (stderr)

nekameleoni.cpp:94:2: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   94 |  main(){
      |  ^~~~

• 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