Submission #1081951

#	Time	Username	Problem	Language	Result	Execution time	Memory
1081951		Dennis_Jason	Raisins (IOI09_raisins)	C++14	100 / 100	559 ms	32344 KiB

raisins

#include <bits/stdc++.h>
#define NMAX 2005
#define pb push_back
#define eb emplace_back
#define MOD 100003
#define nl '\n'
#define LLONG_MAX 9223372036854775807
#define pii pair<int,int>
#define tpl tuple<int,int,int>
//#pragma GCC optimize("O3")
using namespace std;
ifstream fin("aib.in");
ofstream fout("aib.out");
/*
 *
 *
    ================DEMONSTRATION===================


    =====================END========================
 */
int INF =2147483647;
int n,m;
int mat[55][55];
int sp[55][55];
int dp[55][55][55][55];
int suma(int x1, int y1, int x2, int y2) {
    return sp[x2][y2] - (x1 > 1 ? sp[x1-1][y2] : 0) - (y1 > 1 ? sp[x2][y1-1] : 0) + (x1 > 1 && y1 > 1 ? sp[x1-1][y1-1] : 0);
}
int solve(int x,int y,int N,int M)
{

    if(x==N && y==M)
    {
        return 0;
    }
    if(dp[x][y][N][M]!=INF)
        return dp[x][y][N][M];
    int mini=INF;

    //cut on horizontal
    for(int i=y;i<M;++i)
    {
        mini=min(mini,solve(x,i+1,N,M)+solve(x,y,N,i)+suma(x,y,N,M));
    }

    //cut on vertical
    for(int i=x;i<N;++i)
    {
        mini=min(mini,solve(x,y,i,M)+solve(i+1,y,N,M)+suma(x,y,N,M));
    }
    return dp[x][y][N][M]=mini;
}
signed main() {

    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    cin>>n>>m;
    for(int i=1;i<=n;++i)
    {
        for(int j=1;j<=m;++j)
        {
            cin>>mat[i][j];
        }
    }
    for(int i=1;i<=n;++i)
    {
        for(int j=1;j<=m;++j)
        {
            for(int k=1;k<=n;++k)
            {
                for(int l=1;l<=m;++l)
                {
                    dp[i][j][k][l]=INF;
                }
            }
        }
    }
    for(int i=1;i<=n;++i)
    {
        for(int j=1;j<=m;++j)
        {
            sp[i][j]=sp[i-1][j]+sp[i][j-1]-sp[i-1][j-1]+mat[i][j];
        }
    }

    cout<<solve(1,1,n,m);



    return 0;
}

Compilation message (stderr)

raisins.cpp:7: warning: "LLONG_MAX" redefined
    7 | #define LLONG_MAX 9223372036854775807
      | 
In file included from /usr/lib/gcc/x86_64-linux-gnu/10/include/limits.h:195,
                 from /usr/lib/gcc/x86_64-linux-gnu/10/include/syslimits.h:7,
                 from /usr/lib/gcc/x86_64-linux-gnu/10/include/limits.h:34,
                 from /usr/include/c++/10/climits:42,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:39,
                 from raisins.cpp:1:
/usr/include/limits.h:135: note: this is the location of the previous definition
  135 | #  define LLONG_MAX __LONG_LONG_MAX__
      |

• Subtask 1: 100 / 100