Submission #681551

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
681551	2023-01-13 09:54:28	Matteo_Verz	Red-blue table (IZhO19_stones)	C++17	100 / 100	43 ms	3312 KiB

stones

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#include <bits/stdc++.h>
using namespace std;
auto solve(int x, int y) {
    char ch, replacech;
    if (x >= y) {
        swap(x, y);
        ch = '+';
        replacech = '-';
    } else {
        ch = '-';
        replacech = '+';
    }
    vector <vector <char>> a(x, vector <char>(y, ch));
    int ans = y;
    vector <int> freq(y);
    int pos = 0, line = 0;
    while (true) {
        if (freq[(pos + y / 2) % y] < (x - 1) / 2) {
            for (int i = pos; i <= pos + y / 2; i++) {
                freq[i % y]++;
                a[line][i % y] = replacech;
            }
            pos = (pos + y / 2 + 1) % y;
        } else break;
        line++;
        ans++;
    }
 
 
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• Subtask 1: 17 / 17
• Subtask 2: 10 / 10
• Subtask 3: 16 / 16
• Subtask 4: 11 / 11
• Subtask 5: 15 / 15
• Subtask 6: 31 / 31