Submission #1312924

#	Time	Username	Problem	Language	Result	Execution time	Memory
1312924		Zbyszek99	JOIRIS (JOI16_joiris)	C++20	100 / 100	1 ms	332 KiB

joiris

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ld long double
#define ull unsigned long long
#define ff first
#define ss second
#define pii pair<int,int>
#define pll pair<long long, long long>
#define vi vector<int>
#define vl vector<long long>
#define pb push_back
#define rep(i, b) for(int i = 0; i < (b); ++i)
#define rep2(i,a,b) for(int i = a; i <= (b); ++i)
#define rep3(i,a,b,c) for(int i = a; i <= (b); i+=c)
#define count_bits(x) __builtin_popcountll((x))
#define all(x) (x).begin(),(x).end()
#define siz(x) (int)(x).size()
#define forall(it,x) for(auto& it:(x))
using namespace __gnu_pbds;
using namespace std;
typedef tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update> ordered_set;
//mt19937 mt;void random_start(){mt.seed(chrono::time_point_cast<chrono::milliseconds>(chrono::high_resolution_clock::now()).time_since_epoch().count());}
//ll los(ll a, ll b) {return a + (mt() % (b-a+1));}
const int INF = 1e9+50;
const ll INF_L = 1e18+40;
const ll MOD = 1e9+7;

int n,k;
int arr[50];
int arr2[50];
int seg_cnt[50];
vector<pii> ans;

void add_hor(int x)
{
    ans.pb({2,x});
    rep2(i,x,x+k-1) arr[i]++;
}

void add_vert(int x)
{
    ans.pb({1,x});
    arr[x] += k;
}

void del_layer()
{
    rep(i,n) arr[i]--;
}

void norm()
{
    int max_ = 0;
    rep(i,n) max_ = max(max_,arr[i]);
    rep(i,n)
    {
        while(arr[i]/k != max_/k) add_vert(i);
    }
    int min_ = 1e9;
    rep(i,n) min_ = min(min_,arr[i]);
    rep(i,min_) del_layer();
}

bool check(int d)
{
    rep(i,n) arr2[i] = arr[i];
    seg_cnt[0] = d;
    rep(i,k) arr2[i]+=d;
    rep2(i,1,n-k)
    {
        seg_cnt[i] = (arr2[0]-arr2[i]+k*(ll)1e9)%k;
        rep2(j,i,i+k-1) arr2[j] += seg_cnt[i];
    }
    bool is = 1;
    rep(i,n) if(arr2[i]%k != arr2[0]%k) is = 0;
    return is;
}

int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    //random_start();
    cin >> n >> k;
    rep(i,n) cin >> arr[i];
    //cout << n << " " << k << "\n";
    //rep(i,n) cout << arr[i] << "\n";
    bool is = 0;
    rep(i,k)
    {
        if(check(i))
        {
            is = 1;
            break;
        }
    }
    if(!is)
    {
        cout << "-1\n";
        return 0;
    }
    norm();
    rep(i,n-k+1)
    {
        if(seg_cnt[i] == 0) continue;
        int max_ = 0;
        rep2(j,i,i+k-1) max_ = max(max_,arr[j]);
        rep(j,seg_cnt[i]) add_hor(i);
        rep(j,n)
        {
            if(j >= i && j <= i+k-1) continue;
            while(arr[j] < max_+seg_cnt[i]) add_vert(j);
        }
        rep(j,seg_cnt[i]) del_layer();
        norm();
    }
    cout << siz(ans) << "\n";
    forall(it,ans) cout << it.ff << " " << it.ss+1 << "\n";
}

• Subtask 1: 15 / 15
• Subtask 2: 15 / 15
• Subtask 3: 15 / 15
• Subtask 4: 55 / 55