Submission #668108

#	Time	Username	Problem	Language	Result	Execution time	Memory
668108		Manoush	Dijamant (COCI22_dijamant)	C++14	0 / 70	2 ms	852 KiB

Main

#include <bits/stdc++.h>
#define ll long long int
#define F first
#define S second
#define pb push_back

using namespace std;
vector<set<ll>>v(2003);
ll n,m;
ll fun1 (ll x,ll y)
{
    //cout<<"hello "<<x<<" "<<y<<endl;
    if (x==INT_MAX)return 0;
    ll q=*v[y].lower_bound(x+1);
    if (q==INT_MAX||q==INT_MIN)return 0;
    ll sum=q-x-1;
    //cout<<" sum "<<sum<<" "<<q<<endl;
    if (sum%2==0)return 0;
    if (y<sum/2+1||(m-y)<sum/2+1)return 0;
    ll u=(q-x)/2;
    //cout<<"u "<<u<<endl;
    ll con=1;
    for (ll i=1;i<u;i++)
    {
      //  cout<<"1 "<<y+i<<" "<<x+i<<endl;
        ll x1=*v[y+i].lower_bound(x+i);
        //cout<<"2 "<<y-i<<" "<<x+i<<endl;
        ll x2=*v[y-i].lower_bound(x+i);
        //cout<<"3 "<<y+i<<" "<<x1+1<<endl;
        ll y1=*v[y+i].lower_bound(x1+1);
        //cout<<"4 "<<y-i<<" "<<x2+1<<endl;
        ll y2=*v[y-i].lower_bound(x2+1);
        //cout<<x1<<" "<<x2<<" "<<y1<<" "<<y2<<endl;
        if (y1!=q-i||y2!=q-i) return 0;
    }
    ll f1=*v[y+u].lower_bound(x+u);
    ll f2=*v[y-u].lower_bound(x+u);
    //cout<<f1<<" f "<<f2<<endl;
    if (f1!=x+u||f2!=x+u)return 0;
    return 1;
}
int main()
{
    cin>>n>>m;
    char c;
    for (ll i=1;i<=m;i++)
    {
        v[i].clear();
    }
    for (ll i=1;i<=n;i++)
    {
        for (ll j=1;j<=m;j++)
        {
            cin>>c;
            if (c=='#')v[j].insert(i);
        }
    }
    for (ll i=1;i<=m;i++)
    {
        v[i].insert(INT_MAX);
    }
    /*for (ll i=1;i<=m;i++)
    {
        cout<<i<<endl;
        for (auto it:v[i])
        {
            cout<<it<<" ";
        }
        cout<<endl;
    }*/
    ll ans=0;
    for (ll i=1;i<=m;i++)
    {
        for (auto it:v[i])
        {
            ll u=fun1(it,i);
            ans+=u;
      //      cout<<u<<endl;
        }
    }
    cout<<ans<<endl;
    /*
    hello 1 11
 sum 3 5
u 7
1 12 2
2 10 2
3 12 3
4 10 3
2 2 4 4
1 13 3
2 9 3
3 13 4
4 9 4
3 3 2147483647 2147483647
0
    */
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'long long int fun1(long long int, long long int)':
Main.cpp:22:8: warning: unused variable 'con' [-Wunused-variable]
   22 |     ll con=1;
      |        ^~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 50