제출 #10097

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
10097	2014-10-14 13:30:20	sutekine	On grid (kriii2_O)	C++98	1 / 4	1000 ms	2216 KiB

O

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#include <cstdio>
#include <algorithm>
#define oo 987654321
int R, C, A[311][311], S[311][311], DT[310][310];
int f(int a, int b)
{
    int ans = -oo;
    if( a == R+1 && b == C+1 ) return 0;
    if( a == R+1 || b == C+1 ) return -oo;
    if( DT[a][b] == 0 )
    {
        for(int i = a ; i <= R ; i++ ) for( int j = b ; j <= C ; j++ )
            ans = std::max( ans, S[i][j] - S[a-1][j] - S[i][b-1] + S[a-1][b-1] + f(i+1, j+1) );
        DT[a][b] = ans;
    }
    return DT[a][b];
}
int main()
{
    scanf("%d%d",&R,&C);
    for(int i = 1 ; i <= R ; i++ ) for(int j = 1 ; j <= C ; j++ )
        scanf("%d", &A[i][j]);
    for(int i = 1 ; i <= R ; i++ ) for(int j = 1 ; j <= C ; j++ )
        if( i == 1 && j == 1 ) S[i][j] = A[i][j];
        else S[i][j] = S[i-1][j] + S[i][j-1] - S[i-1][j-1] + A[i][j];
    printf("%d", f(1,1));
    return 0;
 
 
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• Subtask 1: 1 / 1
• Subtask 2: 0 / 3