Submission #173229

#	Time	Username	Problem	Language	Result	Execution time	Memory
173229		GoldeN	Red-blue table (IZhO19_stones)	C++17	27 / 100	34 ms	1400 KiB

stones

#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;

#define f first
#define s second
#define pb push_back
#define all(a) a.begin(),a.end()

typedef long long ll;
typedef long double ld;
typedef pair <int,int> pii;
typedef pair <ll,ll> pll;
typedef vector <ll> vl;
typedef vector <int> vi;
typedef vector <bool> vb;
typedef vector <vector <int> > vvi;
typedef vector <vector <ll> > vvl;
typedef vector <pair<int,int> > vii;
typedef vector <pair<ll,ll> > vll;

string itos(int n) {stringstream ss;ss<<n;string s=ss.str();return s;}

ll ppow(ll x,ll y,ll mod) {
    ll res=1;
    while(y) {
        if(y&1) res=res*x%mod;
        y>>=1;
        x=x*x%mod;
    }
    return res;
}



int main() {
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int t;
    cin >> t;
    while (t--) {
        int n,m;
        cin >> n >> m;
        int mx=max(m/2-1+m%2+n,n/2-1+n%2+m);
        cout << mx << "\n";
        if (mx == m/2-1+m%2+n) {
            for (int i=1;i<=n;++i) {
                for (int j=1;j<=m;++j) {
                    if (j <= m/2-1+m%2) {
                        cout << '-';
                    }
                    else {
                        cout << '+';
                    }
                }
                cout << "\n";
            }
        }
        else {
            for (int i=1;i<=n;++i) {
                for (int j=1;j<=m;++j) {
                    if (i <= n/2-1+n%2) {
                        cout << '+';
                    }
                    else {
                        cout << '-';
                    }
                }
                cout << "\n";
            }
        }
    }
}

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