Submission #464697

#	Time	Username	Problem	Language	Result	Execution time	Memory
464697		ahmedfouadnew	Strah (COCI18_strah)	C++17	55 / 110	336 ms	2008 KiB

strah

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define pb push_back
const int mod=1e9+7;
int n,m;
char c[303][303];
int sum[303][303];
int calc(int x,int y,int x2,int y2)
{
    return sum[x2][y2]-sum[x-1][y2]-sum[x2][y-1]+sum[x-1][y-1];
}
signed main()
{
    cin>>n>>m;
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=m;j++)
        {
            cin>>c[i][j];
            sum[i][j]=(c[i][j]=='.');
            sum[i][j]+=sum[i-1][j]+sum[i][j-1]-sum[i-1][j-1];
        }
    }
    int ans=0;
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=m;j++)
        {
            if(c[i][j]=='#') continue;
           for(int l=1;l<=n;l++)
           {
               if(i+l-1>n) break;
               if(calc(i,j,i+l-1,j)!=l) break;
               int s=j,e=m;
               while(s<e)
               {
                 int mid=s+(e-s+1)/2;
                 if(calc(i,j,i+l-1,mid)==l*(mid-j+1))
                 {
                     s=mid;
                 }
                 else
                 {
                     e=mid-1;
                 }
               }
               int sz=(s-j+1);
               ans+=l*(sz*(sz+1)/2);
           }
        }
    }
    cout<<ans<<endl;
    return 0;
}

• Subtask 1: 11 / 11
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 11 / 11
• Subtask 5: 11 / 11
• Subtask 6: 0 / 11
• Subtask 7: 0 / 11
• Subtask 8: 0 / 11
• Subtask 9: 0 / 11
• Subtask 10: 0 / 11