/ SeriousOJ /

Record Detail

Time Exceeded


  
# Status Time Cost Memory Cost
#1 Accepted 2ms 584.0 KiB
#2 Accepted 8ms 540.0 KiB
#3 Accepted 10ms 540.0 KiB
#4 Accepted 11ms 756.0 KiB
#5 Accepted 10ms 788.0 KiB
#6 Accepted 11ms 540.0 KiB
#7 Accepted 47ms 756.0 KiB
#8 Accepted 27ms 540.0 KiB
#9 Accepted 32ms 1.527 MiB
#10 Accepted 27ms 1.102 MiB
#11 Accepted 107ms 2.793 MiB
#12 Accepted 293ms 2.84 MiB
#13 Accepted 18ms 2.527 MiB
#14 Accepted 15ms 3.566 MiB
#15 Accepted 20ms 2.289 MiB
#16 Accepted 16ms 2.73 MiB
#17 Accepted 16ms 2.527 MiB
#18 Accepted 294ms 2.762 MiB
#19 Accepted 21ms 3.77 MiB
#20 Accepted 251ms 3.559 MiB
#21 Time Exceeded ≥2099ms ≥4.234 MiB
#22 Accepted 189ms 4.375 MiB
#23 Accepted 215ms 4.387 MiB
#24 Accepted 208ms 4.438 MiB
#25 Accepted 105ms 4.332 MiB
#26 Accepted 496ms 4.383 MiB
#27 Accepted 187ms 4.383 MiB
#28 Accepted 144ms 4.328 MiB
#29 Accepted 1068ms 4.605 MiB
#30 Accepted 1441ms 4.148 MiB

Code

#include <bits/stdc++.h>
#define nl '\n'
#define ll long long int
#define all(v) v.begin(),v.end()
#define print(v) for(auto data : v) cout << data << " "; cout << nl
using namespace std;
const int N = 2e3 + 5;
char mat[N][N];
int n, m;
bool is_valid_i(int i)
{
    return !(i > n || i <= 0);
}
bool is_valid_j(int j)
{
    return !(j > m || j <= 0);
}
void solve()
{
    cin >> n >> m;
    int ans = 0;
    for (int i = 1; i <= n; i++)
    {
        for (int j = 1; j <= m; j++)
        {
            cin >> mat[i][j]; mat[i][j] == '+'? ans = 1 : ans;
        }
    }
    if(ans ==  0)
    {
        cout << 0 << nl; return;
    }

    // prefix sum?! 
    int mx_cnt = min(n,m) + min(n,m) - 1;
    for (int i = 1; i <= n; i++)
    {
        for (int j = 1; j <= m; j++)
        {
            if(mat[i][j] == '+')
            {
                int r = i+1, l = i-1, upor = j+1, nich = j-1;
                int cnt = 0;
                if(is_valid_i(l) && is_valid_i(r) && is_valid_j(upor) && is_valid_j(nich) &&
                mat[l][j] == '+' && mat[r][j] == '+' && mat[i][upor] == '+' && mat[i][nich] == '+' &&
                (ans/4 > n-i || ans/4 > m-j)) break;
                while (is_valid_i(l) && is_valid_i(r) && is_valid_j(upor) && is_valid_j(nich) &&
                mat[l][j] == '+' && mat[r][j] == '+' && mat[i][upor] == '+' && mat[i][nich] == '+')
                {
                    cnt += 4; r++, l--, upor++, nich--;
                }
                ans = max(ans, cnt + 1);
                if(ans == mx_cnt)
                {
                    cout << ans << nl; return;
                }
            }
        }
    }
    cout << ans << nl;
}
int main()
{
    ios_base::sync_with_stdio(false); cin.tie(NULL);

    int t; cin >> t; 
    while (t--) solve();

    return 0;
}

Information

Submit By
Type
Submission
Problem
P1143 Plus of Pluses
Contest
LU IUJPC : Sylhet Division 2024 Replay Contest
Language
C++17 (G++ 13.2.0)
Submit At
2024-12-10 13:47:04
Judged At
2024-12-10 13:47:04
Judged By
Score
96
Total Time
≥2099ms
Peak Memory
≥4.605 MiB