Submission #253195

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
253195	2020-07-27T11:43:49 Z	Pyqe	Potatoes and fertilizers (LMIO19_bulves)	C++14	30 / 100	1000 ms	133500 KB

bulves

#include <bits/stdc++.h>
#pragma GCC optimize ("unroll-loops")

using namespace std;

#define mp make_pair
#define fr first
#define sc second

int n,a[2][500069];
long long d=0,wg[500069],inf=1e18;

struct segtree
{
	int l,r;
	pair<long long,int> mn;
	long long lz;
	segtree *p[2];
	
	void bd(int lh,int rh)
	{
		l=lh;
		r=rh;
		lz=0;
		if(l==r)
		{
			mn={wg[l],l};
		}
		else
		{
			int md=(l+r)/2;
			
			p[0]=new segtree;
			p[0]->bd(l,md);
			p[1]=new segtree;
			p[1]->bd(md+1,r);
			mn=min(p[0]->mn,p[1]->mn);
		}
	}
	inline void blc()
	{
		if(lz)
		{
			p[0]->mn.fr+=lz;
			p[0]->lz+=lz;
			p[1]->mn.fr+=lz;
			p[1]->lz+=lz;
			lz=0;
		}
	}
	void ud(int lh,int rh,long long w)
	{
		if(l>rh||r<lh);
		else if(l>=lh&&r<=rh)
		{
			mn.fr+=w;
			lz+=w;
		}
		else
		{
			blc();
			p[0]->ud(lh,rh,w);
			p[1]->ud(lh,rh,w);
			mn=min(p[0]->mn,p[1]->mn);
		}
	}
	pair<long long,int> qr(int lh,int rh)
	{
		if(l>rh||r<lh)
		{
			return {inf,-1};
		}
		else if(l>=lh&&r<=rh)
		{
			return mn;
		}
		else
		{
			blc();
			return min(p[0]->qr(lh,rh),p[1]->qr(lh,rh));
		}
	}
}
sg[2];

int main()
{
	int i,ii,k,l,ww;
	long long w,z=0;
	pair<long long,int> tmp;
	
	scanf("%d",&n);
	for(i=1;i<=n;i++)
	{
		for(ii=0;ii<2;ii++)
		{
			scanf("%d",&a[ii][i]);
		}
		k=min(a[0][i],a[1][i]);
		for(ii=0;ii<2;ii++)
		{
			a[ii][i]-=k;
		}
	}
	w=0;
	for(i=n;i;i--)
	{
		w+=a[1][i];
		wg[i]=w+inf*!w;
		z+=w;
	}
	d=w;
	sg[0].bd(1,n);
	k=0;
	for(i=1;i<=n;i++)
	{
		k+=(wg[i]<=0||wg[i]==inf)*2-1;
		if(a[0][i])
		{
			wg[i]=k;
		}
		else
		{
			wg[i]=inf;
		}
	}
	sg[1].bd(1,n);
	for(;d;)
	{
		k=sg[1].mn.sc;
		w=sg[1].mn.fr;
		tmp=sg[0].qr(1,k);
		ww=min(min(tmp.fr,(long long)a[0][k]),d);
		z+=w*ww;
		d-=ww;
		a[0][k]-=ww;
		if(!a[0][k])
		{
			sg[1].ud(k,k,inf);
		}
		sg[0].ud(1,k,-ww);
		for(;1;)
		{
			tmp=sg[0].qr(1,k);
			l=tmp.sc;
			w=tmp.fr;
			if(w)
			{
				break;
			}
			sg[1].ud(l,n,2);
			sg[0].ud(l,l,inf);
		}
	}
	printf("%lld\n",z);
}

Compilation message

bulves.cpp: In function 'int main()':
bulves.cpp:92:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
bulves.cpp:97:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d",&a[ii][i]);
    ~~~~~^~~~~~~~~~~~~~~~

Subtask #1

0 / 24.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	2 ms	1152 KB	Output is correct
3	Correct	5 ms	1152 KB	Output is correct
4	Correct	59 ms	13688 KB	Output is correct
5	Correct	117 ms	27000 KB	Output is correct
6	Correct	182 ms	66808 KB	Output is correct
7	Execution timed out	1008 ms	133500 KB	Time limit exceeded
8	Halted	0 ms	0 KB	-

Subtask #2

0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	2 ms	1152 KB	Output is correct
3	Correct	5 ms	1152 KB	Output is correct
4	Correct	59 ms	13688 KB	Output is correct
5	Correct	117 ms	27000 KB	Output is correct
6	Correct	182 ms	66808 KB	Output is correct
7	Execution timed out	1008 ms	133500 KB	Time limit exceeded
8	Halted	0 ms	0 KB	-

Subtask #3

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	2 ms	1152 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	2 ms	640 KB	Output is correct
5	Correct	2 ms	768 KB	Output is correct
6	Correct	5 ms	1152 KB	Output is correct
7	Correct	3 ms	1152 KB	Output is correct
8	Correct	3 ms	1152 KB	Output is correct
9	Correct	2 ms	1152 KB	Output is correct
10	Correct	3 ms	1152 KB	Output is correct

Subtask #4

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	2 ms	1152 KB	Output is correct
3	Correct	5 ms	1152 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	2 ms	640 KB	Output is correct
6	Correct	2 ms	768 KB	Output is correct
7	Correct	5 ms	1152 KB	Output is correct
8	Correct	3 ms	1152 KB	Output is correct
9	Correct	3 ms	1152 KB	Output is correct
10	Correct	2 ms	1152 KB	Output is correct
11	Correct	3 ms	896 KB	Output is correct
12	Correct	4 ms	1152 KB	Output is correct
13	Correct	4 ms	1152 KB	Output is correct
14	Correct	4 ms	1152 KB	Output is correct
15	Correct	2 ms	1152 KB	Output is correct
16	Correct	3 ms	1152 KB	Output is correct
17	Correct	4 ms	1152 KB	Output is correct
18	Correct	3 ms	1152 KB	Output is correct

Subtask #5

0 / 36.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	2 ms	1152 KB	Output is correct
3	Correct	5 ms	1152 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	2 ms	640 KB	Output is correct
6	Correct	2 ms	768 KB	Output is correct
7	Correct	5 ms	1152 KB	Output is correct
8	Correct	3 ms	1152 KB	Output is correct
9	Correct	3 ms	1152 KB	Output is correct
10	Correct	2 ms	1152 KB	Output is correct
11	Correct	59 ms	13688 KB	Output is correct
12	Correct	117 ms	27000 KB	Output is correct
13	Correct	182 ms	66808 KB	Output is correct
14	Execution timed out	1008 ms	133500 KB	Time limit exceeded
15	Halted	0 ms	0 KB	-