oj.uz

Submission #197381

# Submission time Handle Problem Language Result Execution time Memory
197381 2020-01-20T16:31:05 Z kmekhovich Maxcomp (info1cup18_maxcomp) C++14
15 / 100
 4 ms 504 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("-O3")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
using namespace std;
#define pb push_back
#define fst first
#define snd second
#define all(c) (c).begin(), (c).end()
typedef long long ll;
typedef long double ld;
const ll INF64 = 1e18 + 228;
const int INF32 = 1e9 + 1337;
const int MOD = 1e9 + 7;
const ld eps = 1e-7;
const int N = 1e3 + 3;
signed main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int n, m;
    cin >> n >> m;
    vector< vector<ll> > a(n, vector<ll>(m));
    vector< vector<ll> > dp(n, vector<ll>(m, INF64));
    for(auto& it : a)
        for(auto& it2 : it)
            cin >> it2;
    ll ans = -INF64;
    for(int i = 0; i < n + m - 1; i++)
    {
        for(int j = 0; j <= i; j++)
        {
            int x = j;
            int y = i - j;
            if(x >= n || y < 0 || y >= m) continue;
            dp[x][y] = min(dp[x][y], a[x][y] - x - y);
            if(x)
                dp[x][y] = min(dp[x][y], dp[x - 1][y]);
            if(y)
                dp[x][y] = min(dp[x][y], dp[x][y - 1]);
            ans = max(ans, a[x][y] - x - y - dp[x][y] - 1);
        }
    }
    dp.clear();
    dp.resize(n, vector<ll>(m, INF64));
    for(int i = n + m - 1; i >= 0; i--)
    {
        for(int j = 0; j <= i; j++)
        {
            int x = j;
            int y = i - j;
            if(x >= n || y < 0 || y >= m) continue;
            dp[x][y] = min(dp[x][y], a[x][y] - (n + m - 1 - (x + y)));
            if(x < n - 1)
                dp[x][y] = min(dp[x][y], dp[x + 1][y]);
            if(y < m - 1)
                dp[x][y] = min(dp[x][y], dp[x][y + 1]);
            ans = max(ans, a[x][y] - (n + m - 1 - (x + y)) - dp[x][y] - 1);
        }
    }
    cout << ans;

    return 0;
}

Subtask #1
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 380 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Incorrect 2 ms 376 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 376 KB Output is correct
2 Correct 4 ms 376 KB Output is correct
3 Correct 4 ms 416 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 380 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Incorrect 2 ms 376 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 380 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Incorrect 2 ms 376 KB Output isn't correct
7 Halted 0 ms 0 KB -