Submission #972163

#	Time	Username	Problem	Language	Result	Execution time	Memory
972163		hotboy2703	Super Dango Maker (JOI22_dango3)	C++17	22 / 100	9115 ms	1416 KiB

dango3

#include "dango3.h"

#include <bits/stdc++.h>
using ll = int;
using namespace std;
#define pll pair <ll,ll>
#define fi first
#define se second
#define MP make_pair
#define BIT(mask,i) (((mask) >> (i))&1LL)
#define MASK(i) (1LL<<(i))
#define sz(a) (ll((a).size()))
namespace {
    vector <ll> color[401];
    mt19937_64 rng(69420);
}

void Solve(int n,int m) {
    vector <ll> a(n*m);
    iota(a.begin(),a.end(),1);
    shuffle(a.begin(),a.end(),rng);
    ll rem = m;
    set <ll> lft;
    for (ll i = 1;i <= n * m;i ++)lft.insert(i);
    auto alldif = [&](vector <ll> x) -> bool{
        if (sz(x) < 2)return 1;
        for (auto y:x)lft.erase(y);
        vector <ll> tmp(lft.begin(),lft.end());
        for (auto y:x)lft.insert(y);
        return (Query(tmp) == rem - 1);

    };
    for (ll i = 0;i < n * m;i ++){
        ll id = a[i];
        vector <ll> x;
        for (ll j = 1;j <= n;j ++){
            if (sz(color[j]))x.push_back(color[j][0]);
        }
        x.push_back(id);
        if (sz(x) <= n && alldif(x)){
            for (ll j = 1;j <= n;j ++){
                if (!sz(color[j])){color[j].push_back(id);break;}
            }
        }
        else{
            x.pop_back();
            ll l = 0;
            ll r = sz(x) - 1;
            ll found = -1;
            while (l <= r){
                ll mid = (l + r) >> 1;
                vector <ll> tmp;
                for (ll i = 0;i <= mid;i ++)tmp.push_back(x[i]);
                tmp.push_back(id);
                if (alldif(tmp)){
                    l = mid + 1;
                }
                else{
                    found = x[mid];
                    r = mid - 1;
                }
            }
            for (ll j = 1;j <= n;j ++){
                if (sz(color[j]) && color[j][0] == found){color[j].push_back(id);break;}
            }
        }
        ll cnt = 0;
        for (ll j = 1;j <= n;j ++){
            if (sz(color[j]))cnt++;
        }
        if (cnt == n){
            vector <ll> ans;
            for (ll j = 1;j <= n;j ++){
                ans.push_back(color[j].back());
                color[j].pop_back();
            }
            Answer(ans);
            for (auto x:ans)lft.erase(x);
            rem--;
        }
    }
}

• Subtask 1: 2 / 2
• Subtask 2: 5 / 5
• Subtask 3: 15 / 15
• Subtask 4: 0 / 78