Submission #85099

#	Time	Username	Problem	Language	Result	Execution time	Memory
85099		nikolapesic2802	popa (BOI18_popa)	C++14	Compilation error	0 ms	0 KiB

popa

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back
/*bool query(int a,int b,int c,int d)
{
    printf("%i-%i  %i-%i?\n",a,b,c,d);
    int res;
    scanf("%i",&res);
    return res;
}*/
int query(int a,int b,int c,int d);
bool levo(int poz)
{
    return query(poz,poz,poz,poz-1);
}
bool desno(int poz)
{
    return query(poz,poz,poz,poz+1);
}
int n;
bool inside(int poz)
{
    return poz>=0&&poz<n;
}
int solve(int _N,int* Left,int* Right)
{
    n=_N;
    fill(Left,Left+n,-1);
    fill(Right,Right+n,-1);
    vector<int> parent(n);
    fill(parent.begin(),parent.end(),-1);
    for(int i=0;i<n;i++)
    {
        if(inside(i-1)&&parent[i]==-1)
        {
            if(levo(i))
            {
                int tr=i-1;
                while(parent[tr]!=-1)
                    tr=parent[tr];
                int l=tr,r=i-1;
                while(l<r)
                {
                    int m=(l+r)>>1;
                    if(query(i,i,m,i))
                    {
                        r=m;
                    }
                    else
                    {
                        l=m+1;
                    }
                }
                parent[i]=parent[l];
                Right[parent[i]]=i;
                Left[i]=l;
                parent[l]=i;
            }
            else
                assert(0);
        }
        if(inside(i+1))
        {
            if(desno(i))
            {
                assert(parent[i+1]==-1);
                parent[i+1]=i;
                Right[i]=i+1;
            }
        }
       /* printf("Left:\n");
        for(int i=0;i<n;i++)
        {
            printf("%i ",Left[i]);
        }
        printf("\nRight:\n");
        for(int i=0;i<n;i++)
        {
            printf("%i ",Right[i]);
        }
        printf("\n");*/
    }
    /*printf("Left:\n");
    for(int i=0;i<n;i++)
    {
        printf("%i ",Left[i]);
    }
    printf("\nRight:\n");
    for(int i=0;i<n;i++)
    {
        printf("%i ",Right[i]);
    }*/
}
int main()
{
    int n;
    scanf("%i",&n);
    int *L=new int[n];
    int *R=new int[n];
    solve(n,L,R);
    return 0;
}

Compilation message (stderr)

popa.cpp: In function 'int solve(int, int*, int*)':
popa.cpp:96:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
popa.cpp: In function 'int main()':
popa.cpp:100:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%i",&n);
     ~~~~~^~~~~~~~~
/tmp/ccce5OvQ.o: In function `main':
popa.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/cc5CUkpM.o:grader.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status