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Submission #45254

# Submission time Handle Problem Language Result Execution time Memory
45254 2018-04-12T08:12:42 Z ikura355 Maxcomp (info1cup18_maxcomp) C++14
100 / 100
 274 ms 67300 KB 
#include<bits/stdc++.h>
using namespace std;

const int maxn = 1e3 + 5;

int n,m;
long long p[maxn][maxn];
long long mx[maxn][maxn];

int main() {
    scanf("%d%d",&n,&m);
    for(int i=1;i<=n;i++) for(int j=1;j<=m;j++) scanf("%lld",&p[i][j]);
    long long ans = -1;
    for(int x=1;x<=n;x++) {
        for(int y=1;y<=m;y++) {
            mx[x][y] = -p[x][y] + x + y;
            if(y!=1) mx[x][y] = max(mx[x][y], mx[x][y-1]);
            if(x!=1) mx[x][y] = max(mx[x][y], mx[x-1][y]);
            ans = max(ans, p[x][y] - x - y + mx[x][y] - 1);
        }
    }
    for(int x=n;x>=1;x--) {
        for(int y=1;y<=m;y++) {
            mx[x][y] = -p[x][y] - x + y;
            if(y!=1) mx[x][y] = max(mx[x][y], mx[x][y-1]);
            if(x!=n) mx[x][y] = max(mx[x][y], mx[x+1][y]);
            ans = max(ans, p[x][y] + x - y + mx[x][y] - 1);
        }
    }
    for(int x=1;x<=n;x++) {
        for(int y=m;y>=1;y--) {
            mx[x][y] = -p[x][y] + x - y;
            if(y!=m) mx[x][y] = max(mx[x][y], mx[x][y+1]);
            if(x!=1) mx[x][y] = max(mx[x][y], mx[x-1][y]);
            ans = max(ans, p[x][y] - x + y + mx[x][y] - 1);
        }
    }
    for(int x=n;x>=1;x--) {
        for(int y=m;y>=1;y--) {
            mx[x][y] = -p[x][y] - x - y;
            if(y!=m) mx[x][y] = max(mx[x][y], mx[x][y+1]);
            if(x!=n) mx[x][y] = max(mx[x][y], mx[x+1][y]);
            ans = max(ans, p[x][y] + x + y + mx[x][y] - 1);
        }
    }
    printf("%lld",ans);
}

Compilation message

maxcomp.cpp: In function 'int main()':
maxcomp.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&m);
     ~~~~~^~~~~~~~~~~~~~
maxcomp.cpp:12:54: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i=1;i<=n;i++) for(int j=1;j<=m;j++) scanf("%lld",&p[i][j]);
                                                 ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 252 KB Output is correct
2 Correct 2 ms 356 KB Output is correct
3 Correct 2 ms 408 KB Output is correct
4 Correct 2 ms 484 KB Output is correct
5 Correct 2 ms 484 KB Output is correct
6 Correct 2 ms 532 KB Output is correct
7 Correct 3 ms 544 KB Output is correct
8 Correct 2 ms 544 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 592 KB Output is correct
2 Correct 2 ms 720 KB Output is correct
3 Correct 2 ms 720 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 252 KB Output is correct
2 Correct 2 ms 356 KB Output is correct
3 Correct 2 ms 408 KB Output is correct
4 Correct 2 ms 484 KB Output is correct
5 Correct 2 ms 484 KB Output is correct
6 Correct 2 ms 532 KB Output is correct
7 Correct 3 ms 544 KB Output is correct
8 Correct 2 ms 544 KB Output is correct
9 Correct 2 ms 996 KB Output is correct
10 Correct 3 ms 996 KB Output is correct
11 Correct 3 ms 1004 KB Output is correct
12 Correct 2 ms 1004 KB Output is correct
13 Correct 3 ms 1004 KB Output is correct
14 Correct 2 ms 1004 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 252 KB Output is correct
2 Correct 2 ms 356 KB Output is correct
3 Correct 2 ms 408 KB Output is correct
4 Correct 2 ms 484 KB Output is correct
5 Correct 2 ms 484 KB Output is correct
6 Correct 2 ms 532 KB Output is correct
7 Correct 3 ms 544 KB Output is correct
8 Correct 2 ms 544 KB Output is correct
9 Correct 2 ms 592 KB Output is correct
10 Correct 2 ms 720 KB Output is correct
11 Correct 2 ms 720 KB Output is correct
12 Correct 2 ms 996 KB Output is correct
13 Correct 3 ms 996 KB Output is correct
14 Correct 3 ms 1004 KB Output is correct
15 Correct 2 ms 1004 KB Output is correct
16 Correct 3 ms 1004 KB Output is correct
17 Correct 2 ms 1004 KB Output is correct
18 Correct 274 ms 16320 KB Output is correct
19 Correct 226 ms 24960 KB Output is correct
20 Correct 251 ms 33136 KB Output is correct
21 Correct 212 ms 41668 KB Output is correct
22 Correct 233 ms 50268 KB Output is correct
23 Correct 239 ms 58856 KB Output is correct
24 Correct 170 ms 67300 KB Output is correct