Submission #498770

#	Time	Username	Problem	Language	Result	Execution time	Memory
498770		Shavkatjon	Red-blue table (IZhO19_stones)	C++14	27 / 100	23 ms	1284 KiB

stones

#include <bits/stdc++.h>

#define INF 1000000021
#define MOD 1000000007
#define pb push_back
#define sqr(a) (a)*(a)
#define M(a, b) make_pair(a,b)
#define int long long
#define T(a, b, c) make_pair(a, make_pair(b, c))
#define F first
#define S second
#define all(x) sort(x.begin(), x.end())
#define rall(x) sort(x.rbegin(), x.rend())
#define deb(x) cerr << #x << " = " << x << '\n'
#define N 222222

using namespace std;
//using namespace __gnu_pbds;

typedef long double ld;
typedef pair<int,int> pii;
typedef vector<int> vi;
//typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;

const ld pi = 2 * acos(0.0);

//int month[] = {0,31,28,31,30,31,30,31,31,30,31,30,31};

int gcd(int a, int b) {
    return b ? gcd (b, a % b) : a;
}

string reverse(string s){
    int n = s.length();
    for (int i = 0; i < (n+1) / 2; i++) swap(s[i], s[n - i - 1]);
    return s;
}


int binpow (int a, int n) {
    if (n == 0)
        return 1LL;
    if (n % 2 == 1)
        return ((binpow (a, n-1)%MOD) * 1LL * a)%MOD;
    else {
        int b = binpow (a, n/2)%MOD;
        return (b * b)%MOD;
    }
}

//void swap(int &a, int &b){
//    b = (a+b) - (a=b);
//}

void solve(){
    int n, m, swaped = 0, ans;
    cin >> n >> m;
    char red = '+', blue = '-';
    if(n < m){
        swap(n, m);
        swap(red, blue);
        swaped = 1;
    }
    char a[n][m];
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < m; ++j)
        {
            a[i][j] = red;
        }
    }
    ans = n + (m - 1) / 2;
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < (m - 1) / 2; ++j)
        {
            a[i][j] = blue;
        }
    }
    cout << ans << "\n";
    if(swaped){
        for (int i = 0; i < m; ++i)
        {
            for (int j = 0; j < n; ++j)
            {
                cout << a[j][i];
            }
            cout << "\n";
        }
    }else{
        for (int i = 0; i < n; ++i)
        {
            for (int j = 0; j < m; ++j)
            {
                cout << a[i][j];
            }
            cout << "\n";
        }
    }
}

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int t=1;
    cin>>t;
    while(t--){
        solve();
        cout << "\n";
    }

    return 0;
}

• Subtask 1: 17 / 17
• Subtask 2: 10 / 10
• Subtask 3: 0 / 16
• Subtask 4: 0 / 11
• Subtask 5: 0 / 15
• Subtask 6: 0 / 31