Submission #1060045

#	Time	Username	Problem	Language	Result	Execution time	Memory
1060045		Szymon_Pilipczuk	Triangles (CEOI18_tri)	C++17	0 / 100	1 ms	348 KiB

tri

#include "trilib.h"
//#include <iostream>
using namespace std;
/*int get_n()
{
    int n;
    cin>>n;
    return n;
}
bool is_clockwise(int a,int b,int c)
{
    cout<<a<<" "<<b<<" "<<c<<"\n";
    int result;
    cin>>result;
    if(result ==0)
    {
        return false;
    }
    else
    {
        return true;
    }
}
void give_answer(int s)
{
    cout<<s;
}*/
int main()
{
    int n = get_n();
    int p[n];
    p[0] = 1;
    if(is_clockwise(1,2,3))
    {
        p[1] = 2;
        p[2] = 3;
    }
    else
    {
        p[1] = 3;
        p[2] = 2;
    }
    int ans = 3;
    int l,r;
    for(int i =4;i<=n;i++)
    {
        l = 0;
        r = ans-1;
        while(r>(l+2)%n)
        {
            int mid  = (r+l)/2;
            if(r == ans-1)
            {
                r = 0;
            }
            if(is_clockwise(p[l],p[mid],i))
            {
                l = mid;
            }
            else
            {
                r = mid;
            }

        }
        bool ans2 = is_clockwise(p[l],p[l+1],i);
        bool ans3 = is_clockwise(p[l+1],p[r],i);
        if(ans = 3)
        {
            if (ans2 == false &&ans3 == false)
            {
                p[l+1] = i;
            }
            else if (ans2&&ans3)
            {
                p[r+1] = i;
                ans++;
            }
            else
            {
                bool ans4 = is_clockwise(p[l],p[r],i);
                if(ans4)
                {
                    if(ans2)
                    {
                        p[r] = i;
                    }
                    else
                    {
                        p[l] = i;
                    }
                }
                else
                {
                    if(ans2)
                    {
                        int cu = i;
                        int cu2;
                        for(int j = r;j<=ans;j++)
                        {
                            cu2 = cu;
                            cu = p[j];
                            p[j] = cu2;
                        }
                        ans++;
                    }
                    else
                    {
                        int cu = i;
                        int cu2;
                        for(int j = l+1;j<=ans;j++)
                        {
                            cu2 = cu;
                            cu = p[j];
                            p[j] = cu2;

                        }
                        ans++;
                    }
                }
            }
        }
        else
        {


            if(ans2 ==false)
            {
                if(ans3 == false)
                {
                    p[l+1] = i;
                }
                else
                {



                    int cu = i;
                    int cu2;
                    for(int j = l+1;j<=ans;j++)
                    {
                        cu2 = cu;
                        cu = p[j];
                        p[j] = cu2;

                    }
                    ans++;
                }


            }
            else if(ans3 == false)
            {
                int cu = i;
                int cu2;
                for(int j = r;j<=ans;j++)
                {
                    cu2 = cu;
                    cu = p[j];
                    p[j] = cu2;
                }
                ans++;
            }
        }

    }
    give_answer(ans);


}

Compilation message (stderr)

tri.cpp: In function 'int main()':
tri.cpp:68:16: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   68 |         if(ans = 3)
      |            ~~~~^~~

• Subtask 1: 0 / 15
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 25