Submission #685095

#	Time	Username	Problem	Language	Result	Execution time	Memory
685095		yhlas	Red-blue table (IZhO19_stones)	C++14	0 / 100	23 ms	1284 KiB

stones

#include <iostream>
//#include <algorithm>
//#include <math.h>
//#include <queue>
//#include <stack>
//#include <vector>
//#include <map>
//#include <set>
//#include <iomanip>
using namespace std;

//#include <ext/pb_ds/assoc_container.hpp>
//using namespace __gnu_pbds;
//typedef tree<ll,null_type,less<int>,rb_tree_tag,
//tree_order_statistics_node_update> indexed_set;

#define fbo find_by_order
#define ofk order_of_key

#define gg       500005
#define ll       long long
#define ull      unsigned ll
#define ld       long double
#define pii      pair<int,int>
#define pll      pair<ll,ll>
#define vi       vector<int>
#define vll      vector<ll>
#define stll     stack<ll>
#define qll      queue<ll>
#define pqll     priority_queue<ll>
#define pq       priority_queue

#define pb              push_back
#define ub              upper_bound
#define lb              lower_bound
#define issq(x)         (((ll)(sqrt((x))))*((ll)(sqrt((x))))==(x))
#define ff              first
#define ss              second
#define lg(r,n)         (int)(log2(n)/log2(r))

#define rev(v)              reverse(v.begin(),v.end())
#define srt(v)              sort(v.begin(),v.end())
#define srtr(v)             sort(v.rbegin(),v.rend());
#define all(v)              v.begin(),v.end()
#define allr(v)             v.rbegin(), v.rend()
#define mnv(v)              *min_element(v.begin(),v.end())
#define mxv(v)              *max_element(v.begin(),v.end())
#define countv(v,a)         count(v.begin(),v.end(),a)
#define sz(x)               (int)x.size()

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);

    int _;
    cin >> _;
    while ( _--)
    {
        int n, m;
        cin >> n >> m;

        char a[n + 1][m + 1];
        for (int i = 1; i <= n; i++)
            for (int j = 1; j <= m; j++)
                a[i][j] = '-';
        
        int mx = max(n, m), mn = min(n, m), ans = mx + (mn + 1) / 2;
        
        if ( mn == 1 ){
            if ( m == 1 )
                for (int i = 1; i <= n; i++)
                    a[i][1] = '+';

            cout << mx << '\n';
            for (int i = 1; i <= n; i++){
                for (int j = 1; j <= m; j++)
                    cout << a[i][j];
                cout << '\n';
            }
            continue;
        }

        int x = mn>>1;
        cout << mx - 1 + x * 2 << '\n';
        for (int i = 1; i <= x; i++)
            for (int j = 2; j <= mx; j += 2){
                if ( mn == m ) a[j][i] = a[j - 1][i + x] = '+';
                else a[i][j] = a[i + x][j - 1] = '+';
            }
        
        for (int i = 1; i <= mn; i++){
            if ( mn == m ) a[mx][i] = '+';
            else a[i][mx] = '+';
        }

        for (int i = 1; i <= n; i++){
            for (int j = 1; j <= m; j++)
                cout << a[i][j];
            cout << "\n";
        }
    }
}
//could_solve_myself:)

Compilation message (stderr)

stones.cpp: In function 'int main()':
stones.cpp:68:45: warning: unused variable 'ans' [-Wunused-variable]
   68 |         int mx = max(n, m), mn = min(n, m), ans = mx + (mn + 1) / 2;
      |                                             ^~~

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