제출 #1171950

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1171950		qrn	Red-blue table (IZhO19_stones)	C++20	0 / 100	16 ms	5192 KiB

stones

#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
using namespace std;
// using namespace __gnu_pbds;

#define SPEED                     \
    ios_base::sync_with_stdio(0); \
    cin.tie(NULL);                \
    cout.tie(NULL);

#define pb push_back
#define ins insert
#define fi first
#define se second

#define endl "\n"
#define ALL(x) x.begin(), x.end()
#define sz(x) x.size()
#define intt long long

const intt mod = 1e9 + 7;
const intt base = 31;
const intt inf = 1e9;
const intt mxN = 500000 + 5;
const intt L = 21;

vector<intt> cnt(mxN);

bool cmp(intt &a, intt &b) {
    if(cnt[a] == cnt[b]) return a < b;
    return cnt[a] < cnt[b];
}

void solve() {
    intt n, m;
    cin >> n >> m;
    bool is = false;
    if(n > m) {
        swap(n,m); is = true;
    }
    intt ans = 0;
    
    vector<vector<char>> g(n + 1, vector<char>(m + 1, '-'));
    for(intt i = 1; i <= n; i++) {
        vector<intt> jler;
        intt fort = 0;
        for(intt j = 1; j <= m; j++) {
            if((cnt[j] + 1) * 2 >= n) continue;
            jler.pb(j);
            fort++;
        }
        if(fort * 2 > m) {
            sort(ALL(jler), cmp);
            // cout << i << ": ";
            // for(intt j : jler) cout << j << " ";
            // cout << endl;
            for(intt j = 0; j < jler.size(); j++) {
                intt curj = jler[j];
                cnt[curj]++;
                g[i][curj] = '+';
                if((j + 1) * 2 > m) break;
            }
            ans++;
            } else {
                break;
            }
        // for(intt j = 1; j <= n; j++) {
        //     for(intt k = 1; k <= m; k++) {
        //         cout << g[j][k];
        //     }
        //     cout << endl;
        // }
    }
    cout << ans + m << endl;
    for(intt i = 1; i <= n; i++) {
        for(intt j = 1; j <= m; j++) {
            if(is) {
                cout << (g[i][j] == '+' ? '-' : '+');
            } else {
                cout << g[i][j];
            }
        }
        cout << endl;
    }
}

signed main() {
    SPEED;
    intt tst = 1;
    cin >> tst;
    while (tst--) {
        solve();
    }
}

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