Submission #236240

#	Time	Username	Problem	Language	Result	Execution time	Memory
236240		VEGAnn	Retro (COCI17_retro)	C++14	40 / 100	93 ms	56204 KiB

retro

#include <bits/stdc++.h>
#define sz(x) ((int)x.size())
#define PB push_back
#define MP make_pair
#define all(x) x.begin(),x.end()
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
const int N = 310;
const int oo = 2e9;
char c[N][N];
short f[N][N][N], ans = 0, n, m;

void upd(short &x, short y){
    x = max(x, y);
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

#ifdef _LOCAL
    freopen("in.txt","r",stdin);
#endif // _LOCAL

    cin >> n >> m;

    for (int i = 0; i < n; i++)
    for (int j = 0; j < m; j++)
        cin >> c[n - 1 - i][j];

    for (int i = 0; i < n; i++)
    for (int j = 0; j < m; j++)
    for (int sm = 0; sm <= i; sm++)
        f[i][j][sm] = -1;

    for (int j = 0; j < m; j++)
        if (c[0][j] == 'M')
            f[0][j][0] = 0;

    for (int i = 0; i < n - 1; i++)
    for (int j = 0; j < m; j++)
    for (int sm = 0; sm <= i; sm++){
        if (f[i][j][sm] < 0) continue;

        for (int stp = -1; stp < 2; stp++){
            int ni = i + 1, nj = j + stp;

            if (nj < 0 || nj >= m) continue;

            if (c[ni][nj] == '*'){
                if (sm == 0)
                    upd(ans, f[i][j][sm]);
            } else if (c[ni][nj] == '.'){
                upd(f[ni][nj][sm], f[i][j][sm]);
            } else if (c[ni][nj] == '('){
                upd(f[ni][nj][sm + 1], f[i][j][sm] + 1);
            } else if (sm > 0){
                upd(f[ni][nj][sm - 1], f[i][j][sm] + 1);
            }
        }
    }

    for (int j = 0; j < m; j++)
        ans = max(ans, f[n - 1][j][0]);

    cout << ans << '\n';

    for (int i = ans / 2; i > 0; i--)
        cout << "()";

    return 0;
}

• Subtask 1: 40 / 100