Submission #1220128

#	Time	Username	Problem	Language	Result	Execution time	Memory
1220128		12345678	JOIRIS (JOI16_joiris)	C++20	45 / 100	2 ms	328 KiB

joiris

#include <bits/stdc++.h>

using namespace std;

const int nx=51;

int n, k, a[nx], mx, h[nx], sm;
vector<pair<int, int>> res;

void add(int l, int r, int s, int t)
{
    for (int i=1; i<=n; i++) if (i<l||r<i) res.push_back({1, i}), res.push_back({1, i}), h[i]+=k, h[i]+=k;
    while ((h[s]%k)!=(h[t]%k))
    {
        for (int i=1; i<=n; i++) if (i<l||r<i) h[i]--;
        for (int i=l; i<r; i+=k) res.push_back({2, i});
    }
    int mx=0;
    for (int i=1; i<=n; i++) mx=max(mx, h[i]);
    for (int i=1; i<=n; i++) while (h[i]<mx) h[i]+=k, res.push_back({1, i});
    for (int i=1; i<=n; i++) h[i]=(h[i]-mx)%k;
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>k;
    for (int i=1; i<=n; i++) cin>>h[i], mx=max(mx, h[i]), sm+=h[i];
    for (int i=1; i<=n; i++) while (h[i]<mx) res.push_back({1, i}), h[i]+=k;
    for (int i=1; i<=n; i++) h[i]=(h[i]-mx)%k;
    for (int i=2; i<=n-k+1; i++) if (h[i]!=h[i-1]) add(i, i+k-1, i, i-1);
    if ((n-(k-1))%k==0)
    {
        add(1, n-k+1, 1, n);
    }
    for (int i=1; i<=n; i++) if (h[i]!=h[1]) return cout<<-1, 0;
    cout<<res.size()<<'\n';
    for (auto [x, y]:res) cout<<x<<' '<<y<<'\n';
}

/*
6 1
0 0 0 2 2 0

8 2
0 1 0 1 0 1 0 1
*/

• Subtask 1: 15 / 15
• Subtask 2: 15 / 15
• Subtask 3: 15 / 15
• Subtask 4: 0 / 55