Submission #1166381

#	Time	Username	Problem	Language	Result	Execution time	Memory
1166381		nhphuc	JOIRIS (JOI16_joiris)	C++20	100 / 100	1 ms	328 KiB

joiris

#include <bits/stdc++.h>
using namespace std;

const int N = 57;

int n, k, a[N];
vector<pair<int, int>> ans;

void add_ver (int i){
    a[i] += k;
    ans.push_back({1, i});
    return;
}

void add_hor (int i){
    for (int j = i; j <= i + k - 1; ++j){
        a[j] += 1;
    }
    ans.push_back({2, i});
    return;
}

void upd (int i){
    int mx = *max_element(a + i, a + i + k) + k;
    for (int j = 1; j < i; ++j){
        while (a[j] < mx){
            add_ver(j);
        }
    }
    for (int j = i + k; j <= n; ++j){
        while (a[j] < mx){
            add_ver(j);
        }
    }
    add_hor(i);
    return;
}

int32_t main (){
    ios::sync_with_stdio(false); cin.tie(nullptr);
    if (fopen ("test.inp", "r")){
        freopen ("test.inp", "r", stdin);
        freopen ("test.out", "w", stdout);
    }
    cin >> n >> k;
    for (int i = 1; i <= n; ++i){
        cin >> a[i];
    }
    for (int i = 1; i <= n - k + 1; ++i){
        while (abs(a[i] - a[1]) % k != 0){
            upd(i);
        }
    }
    for (int i = n - k + 1; i >= 1; --i){
        while (abs(a[i + k - 1] - a[n]) % k != 0){
            upd(i);
        }
    }
    int mx = *max_element(a + 1, a + n + 1);
    for (int i = 1; i <= n; ++i){
        while (a[i] < mx){
            add_ver(i);
        }
        if (a[i] != mx){
            return cout << -1, 0;
        }
    }
    cout << ans.size() << "\n";
    for (auto [x, y] : ans){
        cout << x << " " << y << "\n";
    }
}

Compilation message (stderr)

joiris.cpp: In function 'int32_t main()':
joiris.cpp:42:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |         freopen ("test.inp", "r", stdin);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
joiris.cpp:43:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |         freopen ("test.out", "w", stdout);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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