oj.uz

Submission #173536

# Submission time Handle Problem Language Result Execution time Memory
173536 2020-01-04T14:15:59 Z srvlt Red-blue table (IZhO19_stones) C++14
27 / 100
 178 ms 5292 KB 
//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ordered_set tree <pair <int, int>, null_type, less <pair <int, int> >, rb_tree_tag, tree_order_statistics_node_update>
using namespace __gnu_pbds;

#define ll long long
#define db double
#define pb push_back
#define ppb pop_back
#define fi first
#define se second
#define mp make_pair
#define size(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()
#define low_b lower_bound

#define endl "\n"
//#define int long long

using namespace std;

void dout() {
    cerr << endl;
}
template <typename Head, typename... Tail>
void dout(Head H, Tail... T) {
    cerr << H << ' ';
    dout(T...);
}

//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef pair <int, int> pii;

const int N = 1003;
int n, m, a[N][N];
set <pii> c;

void cleanup() {
    c.clear();
}

void solve(int tc) {
    // check for (int i = 0; i < n; j++)

    // 1(+) row, 0(-) col
    memset(a, -1, sizeof(a));
    cin >> n >> m;
    int k, ans;
    pii z;
    vector <pii> tmp;
    if (n > m) {
        for (int i = 1; i <= m; i++) {
            c.insert({0, i});
        }
        ans = n;
        for (int i = 1; i <= n; i++) {
            k = m / 2 + 1;
            auto it = --c.end();
            while (k--) {
                a[i][(*it).se] = 1;
                tmp.pb(*it);
                it--;
            }
            for (auto j : tmp) {
                c.erase(j);
                c.insert({j.fi + 1, j.se});
            }
            tmp.clear();
            for (int j = 1; j <= m; j++) {
                if (a[i][j] == -1) {
                    a[i][j] = 0;
                }
            }
        }
        for (auto i : c) {
            if (n - i.fi >= n / 2 + 1) {
                ans++;
            }
        }
    }   else {
        for (int i = 1; i <= n; i++) {
            c.insert({0, i});
        }
        ans = m;
        for (int i = 1; i <= m; i++) {
            k = n / 2 + 1;
            auto it = --c.end();
            while (k--) {
                a[(*it).se][i] = 0;
                tmp.pb(*it);
                it--;
            }
            for (auto j : tmp) {
                c.erase(j);
                c.insert({j.fi + 1, j.se});
            }
            tmp.clear();
            for (int j = 1; j <= n; j++) {
                if (a[j][i] == -1) {
                    a[j][i] = 1;
                }
            }
        }
        for (auto i : c) {
            if (m - i.fi >= m / 2 + 1) {
                ans++;
            }
        }
    }

    cout << ans << endl;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            if (a[i][j]) {
                cout << '+';
            }   else {
                cout << '-';
            }
        }
        cout << endl;
    }
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
//    freopen("input.txt", "r", stdin);
//    freopen("output.txt", "w", stdout);
    int tc = 1;
    cin >> tc;
    for (int i = 0; i < tc; i++) {
        solve(i);
        cleanup();
    }
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4216 KB Output is correct
2 Correct 9 ms 4344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 4344 KB Output is correct

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4216 KB Output is correct
2 Correct 9 ms 4344 KB Output is correct
3 Correct 67 ms 4344 KB Output is correct
4 Incorrect 112 ms 4372 KB Wrong answer in test 5 29: 31 < 32

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 178 ms 5292 KB Wrong answer in test 97 21: 107 < 116
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 135 ms 5280 KB Wrong answer in test 24 24: 35 < 44
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4216 KB Output is correct
2 Correct 9 ms 4344 KB Output is correct
3 Correct 67 ms 4344 KB Output is correct
4 Incorrect 112 ms 4372 KB Wrong answer in test 5 29: 31 < 32