Submission #346233

#	Time	Username	Problem	Language	Result	Execution time	Memory
346233		inwbear	Minerals (JOI19_minerals)	C++14	Compilation error	0 ms	0 KiB

minerals

//#include "minerals.h"
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define all(x) (x).begin(),(x).end()
#define MEM(x,a) memset((x),a,sizeof((x)))
#define F first
#define S second
#define imx INT_MAX
const long long MOD = (long long)(1e9+7);
const long long MMX = (long long)(1e18);
typedef long long LL;
typedef pair<int,int> pii;
int ty[100005],cc[100005],iin[100005],rett,n,k;
void Answer(int x1,int x2)
{
	printf("=%d %d\n",x1,x2);
	return;
}
int Query(int x1)
{
	k++;
	if(iin[x1]==1)
	{
		iin[x1]=0;
		cc[ty[x1]]--;
		if(cc[ty[x1]]==0)rett--;
	}
	else
	{
		iin[x1]=1;
		cc[ty[x1]]++;
		if(cc[ty[x1]]==1)rett++;
	}
	return rett;
}

int ls,tp,isin[90005];
vector<int>a,b;

void find_ans(vector<int>A,vector<int>B)
{
    int si=A.size(),ch,re;
    vector<int>na1,nb1,na2,nb2;
	// printf("%d %d\n",A.size(),B.size());
	// for(int i=0;i<A.size();i++)
	// {
	// 	printf("%d ",A[i]);
	// }
	// printf("\n");
	// for(int i=0;i<B.size();i++)
	// {
	// 	printf("%d ",B[i]);
	// }
	// printf("\n");
	// printf("===========\n");
    if(A.size()==1)
    {
        Answer(A[0],B[0]);
        return;
    }
    for(int i=0;i<si/2;i++)
    {
        if(isin[B[i]]==0)
        {
            ch=Query(B[i]);
            isin[B[i]]=(isin[B[i]]+1)%2;
        }
        nb1.pb(B[i]);
    }
    for(int i=(si/2);i<si;i++)
    {
        if(isin[B[i]]==1)
        {
            ch=Query(B[i]);
            isin[B[i]]=(isin[B[i]]+1)%2;
        }
        nb2.pb(B[i]);
    }
    for(int i=0;i<si;i++)
    {
        re=Query(A[i]);
        isin[A[i]]=(isin[A[i]]+1)%2;
        if(ch!=re)
        {
            na2.pb(A[i]);
        }
        else
        {
            na1.pb(A[i]);
        }
		ch=re;
    }
    find_ans(na1,nb1);
    find_ans(na2,nb2);
    return;
}

void Solve(int N)
{
    for(int i=1;i<=2*N;i++)
    {
        tp=Query(i);
        isin[i]=(isin[i]+1)%2;
        if(tp!=ls)
        {
            a.pb(i);
        }
        else
        {
            b.pb(i);
        }
        ls=tp;
    }
    find_ans(a,b);
    return;
}

int main()
{
	freopen("in.txt","r",stdin);
	int x1,x2;
	scanf("%d",&n);
	for(int i=1;i<=n;i++)
	{
		scanf("%d %d",&x1,&x2);
		ty[x1]=i;
		ty[x2]=i;
	}
	Solve(n);
	printf("%d",k);
}

Compilation message (stderr)

minerals.cpp: In function 'int main()':
minerals.cpp:121:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  121 |  freopen("in.txt","r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~
minerals.cpp:123:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  123 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
minerals.cpp:126:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  126 |   scanf("%d %d",&x1,&x2);
      |   ~~~~~^~~~~~~~~~~~~~~~~
minerals.cpp: In function 'void find_ans(std::vector<int>, std::vector<int>)':
minerals.cpp:84:9: warning: 'ch' may be used uninitialized in this function [-Wmaybe-uninitialized]
   84 |         if(ch!=re)
      |         ^~
/tmp/ccCzCP4o.o: In function `Query(int)':
grader.cpp:(.text+0x20): multiple definition of `Query(int)'
/tmp/ccVx4cqk.o:minerals.cpp:(.text+0x20): first defined here
/tmp/ccCzCP4o.o: In function `Answer(int, int)':
grader.cpp:(.text+0xf0): multiple definition of `Answer(int, int)'
/tmp/ccVx4cqk.o:minerals.cpp:(.text+0x0): first defined here
/tmp/ccCzCP4o.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccVx4cqk.o:minerals.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status