oj.uz

Submission #871256

# Submission time Handle Problem Language Result Execution time Memory
871256 2023-11-10T10:25:48 Z MisterReaper Sajam (COCI18_sajam) C++17
90 / 90
 27 ms 720 KB 
#pragma GCC optimize("unroll-loops,O3")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

//author: Ahmet Alp Orakci
#include <bits/stdc++.h>
using namespace std;
using i64 = long long;

bitset <1005> bs[1005];

char getc() {
    char ch;
    cin >> ch;
    return ch;
}

#define ONLINE_JUDGE
void solve() {
    int n, k;
    cin >> n >> k;

    for(int i = 1; i <= n; i++) {
        for(int j = 1; j <= n; j++) {
            bs[i][j] = (getc() == 'o');
        }
    }
    
    for(int i = 1; i <= n; i++) {
        int tot = 0;
        for(int j = 1; j <= n; j++) {
            int c = (bs[i] ^ bs[j]).count();
            tot += min(c, n - c);
        }

        if(tot <= k) {
            return cout << "DA" << "\n", void();
        }
    }

    if(k == n) {
        for(int j = 1; j <= n; j++) {
            bs[1][j] = !bs[1][j];
            
            int tot = 0;
            for(int j = 1; j <= n; j++) {
                int c = (bs[1] ^ bs[j]).count();
                tot += min(c, n - c);
            }

            if(tot <= k -1) {
                return cout << "DA" << "\n", void();
            }

            bs[1][j] = !bs[1][j];
        }
    }

    cout << "NE";

    return;
}

signed main() {
    #ifndef ONLINE_JUDGE
        freopen(".in", "r", stdin);
        freopen(".out", "w", stdout);
    #endif

    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);

    int t = 1; //cin >> t;
    for(int i = 1; i <= t; i++) {
        solve();
    }

    return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 4 ms 348 KB Output is correct
3 Correct 4 ms 348 KB Output is correct
4 Correct 15 ms 348 KB Output is correct
5 Correct 4 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 6 ms 348 KB Output is correct
8 Correct 19 ms 488 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 20 ms 348 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 348 KB Output is correct
2 Correct 11 ms 348 KB Output is correct
3 Correct 7 ms 480 KB Output is correct
4 Correct 7 ms 344 KB Output is correct
5 Correct 12 ms 344 KB Output is correct
6 Correct 6 ms 348 KB Output is correct
7 Correct 11 ms 480 KB Output is correct
8 Correct 12 ms 344 KB Output is correct
9 Correct 4 ms 348 KB Output is correct
10 Correct 24 ms 476 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 548 KB Output is correct
2 Correct 11 ms 532 KB Output is correct
3 Correct 7 ms 480 KB Output is correct
4 Correct 8 ms 348 KB Output is correct
5 Correct 9 ms 348 KB Output is correct
6 Correct 19 ms 348 KB Output is correct
7 Correct 5 ms 348 KB Output is correct
8 Correct 11 ms 344 KB Output is correct
9 Correct 13 ms 344 KB Output is correct
10 Correct 21 ms 348 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 348 KB Output is correct
2 Correct 7 ms 348 KB Output is correct
3 Correct 22 ms 488 KB Output is correct
4 Correct 9 ms 344 KB Output is correct
5 Correct 10 ms 496 KB Output is correct
6 Correct 27 ms 580 KB Output is correct
7 Correct 8 ms 348 KB Output is correct
8 Correct 8 ms 524 KB Output is correct
9 Correct 9 ms 348 KB Output is correct
10 Correct 9 ms 600 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 348 KB Output is correct
2 Correct 14 ms 348 KB Output is correct
3 Correct 25 ms 720 KB Output is correct
4 Correct 14 ms 348 KB Output is correct
5 Correct 11 ms 348 KB Output is correct
6 Correct 15 ms 348 KB Output is correct
7 Correct 9 ms 348 KB Output is correct
8 Correct 22 ms 348 KB Output is correct
9 Correct 13 ms 348 KB Output is correct
10 Correct 25 ms 520 KB Output is correct