Submission #945874

#	Time	Username	Problem	Language	Result	Execution time	Memory
945874		VahanAbraham	Nice sequence (IZhO18_sequence)	C++14	15 / 100	6 ms	1028 KiB

sequence

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <algorithm>
#include <cstring>
#include <cstdio>
#include <sstream>
#include <map>
#include <stack>
#include <set>
#include <queue>
#include <unordered_set>
#include <unordered_map>
#include <math.h>
#include <bitset>
#include <cmath>
#include <vector>
#include <iomanip>
#include <random>
#include <chrono>
#include <cassert>
using namespace std;

#define ll long long
#define fr first
#define sc second
#define pb push_back
#define US freopen("cowmbat.in", "r", stdin); freopen("cowmbat.out", "w", stdout);

ll gcd(ll a, ll b)
{
    if (a == 0 || b == 0) {
        return  max(a, b);
    }
    if (a <= b) {
        return gcd(a, b % a);
    }
    else {
        return gcd(a % b, b);
    }
}
ll lcm(ll a, ll b) {
    return (a / gcd(a, b)) * b;
}

const int N = 300005;
const ll oo = 1000000000000000000, MOD = 1000000007;

void solv1(int n, int m) {
    if (n < m) {
        cout << m - 1 << endl;
        for (int i = 1; i <= m - 1; ++i) {
            cout << -1 << " ";
        }
        cout << endl;
    }
    else {
        cout << n - 1 << endl;
        for (int i = 1; i <= n - 1; ++i) {
            cout << 1 << " ";
        }
        cout << endl;
    }
}

void solve() {
    int n, m;
    cin >> n >> m;
    ll mx = 1000000000, mn = -mx;
    if (max(n, m) % min(n, m) == 0) {
        solv1(n, m);
        return;
    }
    if (min(n, m) == 2) {
        if (n == 2) {
            --mx;
            cout << m << endl;
            for (int i = 1; i <= m;i+=2) {
                if (i == m) {
                    cout << mx;
                    break;
                }
                cout << mx << " " << -mx - 1 << " ";
            }
            cout << endl;
        }
        else {
            --mx;
            cout << n << endl;
            for (int i = 1; i <= n; i += 2) {
                if (i == n) {
                    cout << -mx;
                    break;
                }
                cout << -mx << " " << mx + 1 << " ";
            }
            cout << endl;
        }
        return;
    }
    if (n < m) {
        int sum = 0;
        cout << n * 2 - 1 << endl;
        for (int i = 1; i <= n - 1; ++i) {
            cout << 1 << " ";
            ++sum;
        }
        cout << -(sum + 1) << " ";
        for (int i = n + 1; i <= 2 * n - 1; ++i) {
            cout << 1 << " ";
        }
        cout << endl;
    }
    else {
        int sum = 0;
        cout << m * 2 - 1 << endl;
        for (int i = 1; i <= m - 1; ++i) {
            cout << -1 << " ";
            ++sum;
        }
        cout << (sum + 1) << " ";
        for (int i = m + 1; i <= 2 *m - 1; ++i) {
            cout << -1 << " ";
        }
        cout << endl;
    }
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
    //US
    int tt = 1;
    cin >> tt;
    while (tt--) {
        solve();
    }
}

Compilation message (stderr)

sequence.cpp: In function 'void solve()':
sequence.cpp:69:25: warning: unused variable 'mn' [-Wunused-variable]
   69 |     ll mx = 1000000000, mn = -mx;
      |                         ^~

• Subtask 1: 6 / 6
• Subtask 2: 9 / 9
• Subtask 3: 0 / 14
• Subtask 4: 0 / 15
• Subtask 5: 0 / 14
• Subtask 6: 0 / 18
• Subtask 7: 0 / 24