oj.uz

답안 #636892

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
636892 2022-08-30T11:38:27 Z Dec0Dedd Maxcomp (info1cup18_maxcomp) C++14
100 / 100
 144 ms 43448 KB 
#include <bits/stdc++.h>

using namespace std;

#define ll long long

const int N = 1e3+100;
const ll INF = 1e18;
const int di[] = {-1, -1, 1, 1};
const int dj[] = {-1, 1, 1, -1};

ll a[N][N], p[4][N][N], n, m;

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

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

   for (int k=0; k<4; ++k) {
      for (int i=0; i<=n+1; ++i) {
         for (int j=0; j<=m+1; ++j) p[k][i][j]=INF;
      }
   }

   // 0
   for (ll i=1; i<=n; ++i) {
      for (ll j=1; j<=m; ++j) {
         p[0][i][j]=min({p[0][i-1][j], p[0][i][j-1], a[i][j]+i*di[0]+j*dj[0]});
      }
   }

   // 1
   for (ll i=1; i<=n; ++i) {
      for (ll j=m; j>=1; --j) {
         p[1][i][j]=min({p[1][i-1][j], p[1][i][j+1], a[i][j]+i*di[1]+j*dj[1]});
      }
   }

   // 2
   for (ll i=n; i>=1; --i) {
      for (ll j=m; j>=1; --j) {
         p[2][i][j]=min({p[2][i+1][j], p[2][i][j+1], a[i][j]+i*di[2]+j*di[2]});
      }
   }

   // 3
   for (ll i=n; i>=1; --i) {
      for (ll j=1; j<=m; ++j) {
         p[3][i][j]=min({p[3][i+1][j], p[3][i][j-1], a[i][j]+i*di[3]+j*dj[3]});
      }
   }

   ll ans=-1;
   for (ll i=1; i<=n; ++i) {
      for (ll j=1; j<=m; ++j) {
         for (int k=0; k<4; ++k) {
            ans=max(ans, a[i][j]+di[k]*i+dj[k]*j-p[k][i][j]-1);
         }
      }
   }

   cout<<ans<<"\n";
}

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct

Subtask #3
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 1364 KB Output is correct
10 Correct 1 ms 1364 KB Output is correct
11 Correct 1 ms 1364 KB Output is correct
12 Correct 1 ms 1364 KB Output is correct
13 Correct 1 ms 1364 KB Output is correct
14 Correct 1 ms 1364 KB Output is correct

Subtask #4
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 1364 KB Output is correct
13 Correct 1 ms 1364 KB Output is correct
14 Correct 1 ms 1364 KB Output is correct
15 Correct 1 ms 1364 KB Output is correct
16 Correct 1 ms 1364 KB Output is correct
17 Correct 1 ms 1364 KB Output is correct
18 Correct 126 ms 43356 KB Output is correct
19 Correct 129 ms 43448 KB Output is correct
20 Correct 119 ms 43340 KB Output is correct
21 Correct 125 ms 43448 KB Output is correct
22 Correct 144 ms 43396 KB Output is correct
23 Correct 138 ms 43352 KB Output is correct
24 Correct 121 ms 41236 KB Output is correct