oj.uz

Submission #496853

# Submission time Handle Problem Language Result Execution time Memory
496853 2021-12-22T05:32:14 Z ergagan Maxcomp (info1cup18_maxcomp) C++17
0 / 100
 500 ms 157228 KB 
//я так много думал, что опять попал
#include <bits/stdc++.h>
#define all(x) x.begin(),x.end()
#define pb push_back
#define ppb pop_back
#define pf push_front
#define ppf pop_front
#define f first
#define s second
#define left(v) v + v
#define right(v) v + v + 1
#define ub upper_bound
#define lb lower_bound
#define pll pair<ll,ll>

using namespace std;
typedef long long ll;

//17 SEVENTEEN
const long double Pi = acos(-1.0);
const ll dx[] = {0,0,1,-1};
const ll dy[] = {1,-1,0,0};
const ll N = (ll) 1e6 + 17;
const ll M = (ll) 5e3 + 69;
const ll inf = (ll) 1e14 + 3;
const ll mod = (ll) 1e9 + 7;
ll sq(ll x) { return x * x; }

ll zxc = 1, n, m, ans, a[M][M];

map<set<pll>, bool> used;

void go(ll i, ll j, set<pll> st, ll mn, ll mx) {
    if(used[st]) return;

    used[st] = 1;
    ans = max(ans, mx - mn - ll(st.size()));

    if(i > 1) {
        set<pll> cur = st;
        cur.insert({i - 1, j});
        go(i - 1, j, cur, min(mn, a[i - 1][j]), max(mx, a[i - 1][j]));
    }

    if(i != n) {
        set<pll> cur = st;
        cur.insert({i + 1, j});
        go(i + 1, j, cur, min(mn, a[i + 1][j]), max(mx, a[i + 1][j]));
    }

    if(j > 1) {
        set<pll> cur = st;
        cur.insert({i, j - 1});
        go(i, j - 1, cur, min(mn, a[i][j - 1]), max(mx, a[i][j - 1]));
    }

    if(j != m) {
        set<pll> cur = st;
        cur.insert({i, j + 1});
        go(i, j + 1, cur, min(mn, a[i][j + 1]), max(mx, a[i][j + 1]));
    }
}

void solve() {

    cin >> n >> m;
    for(ll i = 1; i <= n; i++) {
        for(ll j = 1; j <= m; j++) {
            cin >> a[i][j];
        }
    }

    for(ll i = 1; i <= n; i++) {
        for(ll j = 1; j <= m; j++) {
            go(i, j, {{i, j}}, a[i][j], a[i][j]);
        }
    }

    cout << ans;
}

int main(/*Уверенно*/) {
ios_base::sync_with_stdio(0);
    cin.tie(0);
/*
	freopen(".in", "r", stdin);
	freopen(".out", "w", stdout);
*/
//    cin >> zxc;
    while(zxc--) {
        solve();
    }
  	return 0;
}
// さよならさ いかなくちゃ

Subtask #1
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 3780 KB Output is correct
2 Correct 35 ms 4344 KB Output is correct
3 Incorrect 42 ms 4292 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1097 ms 157228 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 3780 KB Output is correct
2 Correct 35 ms 4344 KB Output is correct
3 Incorrect 42 ms 4292 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 3780 KB Output is correct
2 Correct 35 ms 4344 KB Output is correct
3 Incorrect 42 ms 4292 KB Output isn't correct
4 Halted 0 ms 0 KB -