이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
#define pb push_back
#define LL long long
#define Kultivator ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define int LL
using namespace std;
const LL Mxn = 1e3;
const LL Mod = 1e9;
const LL Inf = 1e14 + 7;
signed main(){
    Kultivator;
    int tt;
    cin >> tt;
    while(tt--){
        int N, M;
        cin >> N >> M;
        if(N == M){
            cout << N - 1 << '\n';
            for(int i = 1; i < N; i++){
                cout << true << ' ';
            }
        }
        else if(min(N, M) == 2){
            if(max(N, M) % 2){
                cout << max(N, M) << '\n';
                if(N < M){
                    cout << Mod - 1 << ' ';
                    for(int i = 1; i < M - 1; i++){
                        if(i % 2){
                            cout << -Mod << ' ';
                        } else {
                            cout << Mod - 1 << ' ';
                        }
                    }
                    cout << Mod - 1 << ' ';
                } else {
                    cout << -Mod + 1 << ' ';
                    for(int i = 1; i < N - 1; i++){
                        if(i % 2){
                            cout << Mod << ' ';
                        } else {
                            cout << -Mod + 1 << ' ';
                        }
                    }
                    cout << -Mod + 1 << ' ';
                }
            } else {
                cout << max(N, M) - 1 << '\n';
                if(N > M){
                    for(int i = 1; i < N; i++){
                        cout << 1 << ' ';
                    }
                } else {
                    for(int i = 1; i < M; i++){
                        cout << -1 << ' ';
                    }
                }
            }
        } else if(min(N, M) == 1){
            cout << max(N, M) - 1 << '\n';
            if(N < M){
                for(int i = 1; i < M; i++){
                    cout << -1 << ' ';
                }
            } else {
                for(int i = 1; i < N; i++){
                    cout << 1 << ' ';
                }
            }
        } else if(abs(N - M) < 3){
            cout << max(N, M) << '\n';
            if(N < M){
                cout << (Mxn * (M - 2)) - 1 << ' ';
                for(int i = 1; i < M - 1; i++){
                    cout << -Mxn << ' ';
                }
                cout << (Mxn * (M - 2)) - 1 << ' ';
            } else {
                cout << (-Mxn * (N - 2)) + 1 << ' ';
                for(int i = 1; i < N - 1; i++){
                    cout << Mxn << ' ';
                }
                cout << (-Mxn * (N - 2)) + 1 << ' ';
            }
        }
        cout << '\n';
    }
}
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