oj.uz

Submission #834955

# Submission time Handle Problem Language Result Execution time Memory
834955 2023-08-23T03:38:21 Z maomao90 Virus Experiment (JOI19_virus) C++17
6 / 100
 294 ms 4644 KB 
// Hallelujah, praise the one who set me free
// Hallelujah, death has lost its grip on me
// You have broken every chain, There's salvation in your name
// Jesus Christ, my living hope
#include <bits/stdc++.h> 
using namespace std;

#define REP(i, s, e) for (int i = (s); i < (e); i++)
#define RREP(i, s, e) for (int i = (s); i >= (e); i--)
template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}

typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define SZ(_a) (int) _a.size()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
typedef vector<iii> viii;

#ifndef DEBUG
#define cerr if (0) cerr
#endif

const int INF = 1000000005;
const ll LINF = 1000000000000000005ll;
const int MAXN = 200005;
const int MAXR = 805;
const int diri[] = {-1, 0, 1, 0}, dirj[] = {0, 1, 0, -1};

int key[500];

int n, r, c;
string s;
int a[MAXN];
int g[MAXR][MAXR];
int gap[1 << 4];
bool vis[MAXR][MAXR];
int st[MAXR][MAXR];
int ans, ansc;

int main() {
#ifndef DEBUG
    ios::sync_with_stdio(0), cin.tie(0);
#endif
    key['N'] = 0, key['E'] = 1, key['S'] = 2, key['W'] = 3;
    cin >> n >> r >> c;
    cin >> s;
    REP (i, 1, r + 1) {
        REP (j, 1, c + 1) {
            cin >> g[i][j];
        }
    }
    REP (i, 0, n) {
        a[i] = key[s[i]];
    }
    REP (i, n, 2 * n) {
        a[i] = a[i - n];
    }
    REP (msk, 0, 1 << 4) {
        REP (l, 0, n) {
            int r = l;
            while (r - l < n && (msk >> a[r] & 1)) {
                r++;
            }
            if (r - l == n) {
                gap[msk] = INF;
                break;
            }
            mxto(gap[msk], r - l);
            l = r;
        }
        cerr << msk << ": " << gap[msk] << '\n';
    }
    if (r > 50 && c > 50) {
        REP (i, 1, r + 1) {
            REP (j, 1, c + 1) {
                if (g[i][j] == 0) {
                    continue;
                }
                bool bad = 0;
                REP (k, 0, 4) {
                    int vi = i + diri[k], vj = j + dirj[k];
                    if (g[vi][vj] == 0 || vis[vi][vj]) {
                        continue;
                    }
                    if (g[vi][vj] <= gap[1 << (k ^ 2)]) {
                        bad = 1;
                        break;
                    }
                }
                ansc += !bad;
            }
        }
        cout << 0 << '\n' << ansc << '\n';
        return 0;
    }
    ans = INF;
    REP (i, 1, r + 1) {
        REP (j, 1, c + 1) {
            if (g[i][j] == 0) {
                continue;
            }
            memset(vis, 0, sizeof vis);
            memset(st, 0, sizeof st);
            vis[i][j] = 1;
            queue<ii> qu;
            qu.push({i, j});
            int cnt = 0;
            while (!qu.empty()) {
                auto [ui, uj] = qu.front(); qu.pop();
                cnt++;
                REP (k, 0, 4) {
                    int vi = ui + diri[k], vj = uj + dirj[k];
                    if (g[vi][vj] == 0 || vis[vi][vj]) {
                        continue;
                    }
                    st[vi][vj] |= 1 << (k ^ 2);
                    if (g[vi][vj] <= gap[st[vi][vj]]) {
                        vis[vi][vj] = 1;
                        qu.push({vi, vj});
                    }
                }
            }
            if (mnto(ans, cnt)) {
                ansc = 0;
            }
            if (ans == cnt) {
                ansc++;
            }
        }
    }
    cout << ans << '\n' << ansc << '\n';
    return 0;
}

Compilation message

virus.cpp: In function 'int main()':
virus.cpp:66:24: warning: array subscript has type 'char' [-Wchar-subscripts]
   66 |         a[i] = key[s[i]];
      |                        ^

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 4052 KB Output is correct
2 Incorrect 45 ms 2748 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3540 KB Output is correct
2 Correct 8 ms 4436 KB Output is correct
3 Correct 14 ms 4436 KB Output is correct
4 Correct 8 ms 4436 KB Output is correct
5 Correct 7 ms 4436 KB Output is correct
6 Correct 241 ms 4636 KB Output is correct
7 Correct 7 ms 3540 KB Output is correct
8 Correct 13 ms 4568 KB Output is correct
9 Correct 146 ms 3640 KB Output is correct
10 Correct 8 ms 4436 KB Output is correct
11 Correct 129 ms 3644 KB Output is correct
12 Correct 294 ms 3648 KB Output is correct
13 Correct 183 ms 4636 KB Output is correct
14 Correct 182 ms 4640 KB Output is correct
15 Correct 189 ms 4640 KB Output is correct
16 Correct 180 ms 4564 KB Output is correct
17 Correct 141 ms 4052 KB Output is correct
18 Correct 131 ms 3668 KB Output is correct
19 Correct 131 ms 4644 KB Output is correct

Subtask #3
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 4052 KB Output is correct
2 Incorrect 45 ms 2748 KB Output isn't correct
3 Halted 0 ms 0 KB -