Submission #798152

#	Time	Username	Problem	Language	Result	Execution time	Memory
798152		Mouad_ouj	Raisins (IOI09_raisins)	C++17	10 / 100	375 ms	53368 KiB

raisins

#include<bits/stdc++.h>
#define int long long 
using namespace std;
int tab[51][51];
int memo[51][51][51][51];
int solve(int xmin,int xmax,int ymin,int ymax)
{
    if(memo[xmin][xmax][ymin][ymax]!=-1)
    return memo[xmin][xmax][ymin][ymax];
    int ans=1000*50*50*50*51,cur=0;
    for(int x=xmin;x<=xmax;x++)
    {
        for(int y=ymin;y<=ymax;y++)
            cur+=tab[x][y];
    }
    if((xmax-xmin==1 && ymax-ymin==0)||(xmax-xmin==0 && ymax-ymin==1))
    return cur;
    for(int x=xmin+1;x<=xmax;x++)
        ans=min(ans,solve(xmin,x-1,ymin,ymax)+solve(x,xmax,ymin,ymax)+cur);
    for(int y=ymin+1;y<=ymax;y++)
        ans=min(ans,solve(xmin,xmax,ymin,y-1)+solve(xmin,xmax,y,ymax)+cur);
    memo[xmin][xmax][ymin][ymax]=ans;
    return ans;
}
signed main()
{
    memset(memo,-1,sizeof(memo));
    int n,m;
    cin>>n>>m;
    for(int x=0;x<n;x++)
    {
        for(int y=0;y<m;y++)
            cin>>tab[x][y];
    }
    cout<<solve(0,n-1,0,m-1);
}

Compilation message (stderr)

raisins.cpp: In function 'long long int solve(long long int, long long int, long long int, long long int)':
raisins.cpp:10:26: warning: integer overflow in expression of type 'int' results in '2080032704' [-Woverflow]
   10 |     int ans=1000*50*50*50*51,cur=0;
      |             ~~~~~~~~~~~~~^~~

• Subtask 1: 10 / 100