oj.uz

Submission #14736

# Submission time Handle Problem Language Result Execution time Memory
14736 2015-06-15T11:57:36 Z gs13068 Palembang Bridges (APIO15_bridge) C++
63 / 100
 2000 ms 20220 KB 
#include<cstdio>
#include<algorithm>

int p[111111];
int s[111111];
int q[111111];
int t[111111];
char pp[11],qq[11];
int x[222222];
std::pair<int,int> d[111111];
int dn;

long long L[111111];
long long R[111111];

struct tree
{
	int l;
	int r;
    int s;
    int e;
    int t;
    long long x;
} T[444444];
int Tn;
int stat=-1;
long long now;

int n;

void init(int i,int s,int e)
{
    T[i].s = s;
    T[i].e = e;
    if(e-s>1)
    {
		T[i].l=Tn++;
		T[i].r=Tn++;
        init(T[i].l,s,(s+e)/2);
        init(T[i].r,(s+e)/2,e);
    }
}

void add(int i,int s,int e,int t)
{
	if(s<T[i].s)s=T[i].s;
	if(e>T[i].e)e=T[i].e;
	if(s>=e)return;
	if(t>0)T[i].x+=x[e]-x[s];
	else T[i].x-=x[e]-x[s];
	if(s==T[i].s&&e==T[i].e)
	{
		T[i].t+=t;
		return;
	}
	add(T[i].l,s,e,t);
	add(T[i].r,s,e,t);
}

long long get(int i,int s,int e)
{
	if(s<T[i].s)s=T[i].s;
	if(e>T[i].e)e=T[i].e;
	if(s>=e)return 0LL;
    if(s==T[i].s&&e==T[i].e)return T[i].x;
    return 1LL*(x[e]-x[s])*T[i].t+get(T[i].l,s,e)+get(T[i].r,s,e);
}

int get_t(int i,int t)
{
	if(t<T[i].s||t>=T[i].e)return 0;
    if(t==T[i].s&&t+1==T[i].e)return T[i].t;
    return T[i].t+get_t(T[i].l,t)+get_t(T[i].r,t);
}

void calcL(int ss,int ee,int l,int r)
{
	if(ss>=ee)return;
	long long tt;
    int i,j,m=(ss+ee)/2;
    int ll,rr;
    while(stat<m)
    {
		++stat;
		j=d[stat].second;
		now+=x[std::min(s[j],t[j])]-x[0];
		add(0,0,std::min(s[j],t[j]),-1);
		add(0,std::max(s[j],t[j]),n+n-1,1);
    }
    while(stat>m)
    {
		j=d[stat].second;
		now-=x[std::min(s[j],t[j])]-x[0];
		add(0,0,std::min(s[j],t[j]),1);
		add(0,std::max(s[j],t[j]),n+n-1,-1);
		stat--;
    }

    ll=rr=l;
    tt=L[m]=now+get(0,0,l);
    for(i=l+1;i<r;i++)
    {
		tt+=1LL*(x[i]-x[i-1])*get_t(0,i-1);
		if(L[m]>tt)
		{
			L[m]=tt;
            ll=rr=i;
		}
        if(L[m]==tt)rr=i;
	}

	i=std::upper_bound(x,x+n+n-1,(x[ll]+x[rr]+1)/2)-x;

	calcL(ss,m,l,i);
	calcL(m+1,ee,i-1,r);
}

void calcR(int ss,int ee,int l,int r)
{
	if(ss>=ee)return;
	long long tt;
    int i,j,m=(ss+ee)/2;
    int ll,rr;
    while(stat>m)
    {
		--stat;
		j=d[stat].second;
		now+=x[std::min(s[j],t[j])]-x[0];
		add(0,0,std::min(s[j],t[j]),-1);
		add(0,std::max(s[j],t[j]),n+n-1,1);
    }
    while(stat<m)
    {
		j=d[stat].second;
		now-=x[std::min(s[j],t[j])]-x[0];
		add(0,0,std::min(s[j],t[j]),1);
		add(0,std::max(s[j],t[j]),n+n-1,-1);
		stat++;
    }

    ll=rr=l;
    tt=R[m]=now+get(0,0,l);
    for(i=l+1;i<r;i++)
    {
		tt+=1LL*(x[i]-x[i-1])*get_t(0,i-1);
		if(R[m]>tt)
		{
			R[m]=tt;
            ll=rr=i;
		}
        if(R[m]==tt)rr=i;
	}

	i=std::upper_bound(x,x+n+n-1,(x[ll]+x[rr]+1)/2)-x;

	calcR(ss,m,l,i);
	calcR(m+1,ee,i-1,r);
}

int main()
{
	//freopen("input","r",stdin);
	//freopen("output","w",stdout);
	long long res=0;
	int i,j,m,ss,ee,l,r;
	int fir,sec;
	long long min;
	scanf("%d%d",&m,&n);
	if(m==1)
	{
		j=0;
        for(i=0;i<n;i++)
        {
			scanf("%s%d%s%d",pp,&s[i],qq,&t[i]);
			p[i]=pp[0]-'A';
			q[i]=qq[0]-'A';
			if(p[i]!=q[i])
			{
				j++;
				d[dn++]=std::make_pair(std::min(s[i],t[i]),-1);
				d[dn++]=std::make_pair(std::max(s[i],t[i]),-1);
			}
        }
        std::sort(d,d+dn);
        for(i=0;i<dn;i++)
        {
			j+=d[i].second;
            if(j<=0)break;
        }
        for(j=0;j<n;j++)
        {
			if(p[j]!=q[j])res+=std::abs(s[j]-d[i].first)+std::abs(t[j]-d[i].first)+1;
			else res+=std::abs(s[j]-t[j]);
        }
        printf("%lld\n",res);
		return 0;
	}

	for(i=0;i<n;i++)
	{
		scanf("%s%d%s%d",pp,&s[i],qq,&t[i]);
		p[i]=pp[0]-'A';
		q[i]=qq[0]-'A';
		//s[i]=2*i;
		//t[i]=2*i+1;
		x[i]=s[i];
		x[i+n]=t[i];
	}

    for(i=0;i<n;i++)if(p[i]!=q[i])d[dn++]=std::make_pair(s[i]+t[i],i);

	std::sort(x,x+n+n);
	for(i=0;i<n;i++)
	{
		s[i]=std::lower_bound(x,x+n+n,s[i])-x;
		t[i]=std::lower_bound(x,x+n+n,t[i])-x;
	}

	if(dn)
	{
		std::sort(d,d+dn);

		Tn=1;
		init(0,0,n+n-1);

		calcL(0,dn,0,n+n-1);

		for(i=0;i<Tn;i++)T[i].x=T[i].t=0;

		now=0;
		stat=dn;

		calcR(0,dn,0,n+n-1);

		res=std::min(L[dn-1],R[0]);
		for(i=1;i<dn;i++)res=std::min(res,L[i-1]+R[i]);
	}
	else res=0;

	res*=2;

	for(i=0;i<n;i++)
	{
		res+=std::abs(x[s[i]]-x[t[i]]);
		res+=p[i]!=q[i];
	}

	printf("%lld\n",res);
}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:165:12: warning: unused variable 'ss' [-Wunused-variable]
  int i,j,m,ss,ee,l,r;
            ^
bridge.cpp:165:15: warning: unused variable 'ee' [-Wunused-variable]
  int i,j,m,ss,ee,l,r;
               ^
bridge.cpp:165:18: warning: unused variable 'l' [-Wunused-variable]
  int i,j,m,ss,ee,l,r;
                  ^
bridge.cpp:165:20: warning: unused variable 'r' [-Wunused-variable]
  int i,j,m,ss,ee,l,r;
                    ^
bridge.cpp:166:6: warning: unused variable 'fir' [-Wunused-variable]
  int fir,sec;
      ^
bridge.cpp:166:10: warning: unused variable 'sec' [-Wunused-variable]
  int fir,sec;
          ^
bridge.cpp:167:12: warning: unused variable 'min' [-Wunused-variable]
  long long min;
            ^
bridge.cpp:168:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&m,&n);
                     ^
bridge.cpp:174:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%s%d%s%d",pp,&s[i],qq,&t[i]);
                                       ^
bridge.cpp:201:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s%d%s%d",pp,&s[i],qq,&t[i]);
                                      ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 20220 KB Output is correct
2 Correct 0 ms 20220 KB Output is correct
3 Correct 0 ms 20220 KB Output is correct
4 Correct 0 ms 20220 KB Output is correct
5 Correct 0 ms 20220 KB Output is correct
6 Correct 0 ms 20220 KB Output is correct
7 Correct 0 ms 20220 KB Output is correct
8 Correct 0 ms 20220 KB Output is correct
9 Correct 0 ms 20220 KB Output is correct
10 Correct 0 ms 20220 KB Output is correct
11 Correct 0 ms 20220 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 20220 KB Output is correct
2 Correct 0 ms 20220 KB Output is correct
3 Correct 0 ms 20220 KB Output is correct
4 Correct 0 ms 20220 KB Output is correct
5 Correct 0 ms 20220 KB Output is correct
6 Correct 0 ms 20220 KB Output is correct
7 Correct 0 ms 20220 KB Output is correct
8 Correct 0 ms 20220 KB Output is correct
9 Correct 0 ms 20220 KB Output is correct
10 Correct 0 ms 20220 KB Output is correct
11 Correct 0 ms 20220 KB Output is correct
12 Correct 36 ms 20220 KB Output is correct
13 Correct 56 ms 20220 KB Output is correct
14 Correct 49 ms 20220 KB Output is correct
15 Correct 49 ms 20220 KB Output is correct
16 Correct 49 ms 20220 KB Output is correct
17 Correct 76 ms 20220 KB Output is correct
18 Correct 46 ms 20220 KB Output is correct
19 Correct 76 ms 20220 KB Output is correct
20 Correct 46 ms 20220 KB Output is correct
21 Correct 56 ms 20220 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 20220 KB Output is correct
2 Correct 0 ms 20220 KB Output is correct
3 Correct 0 ms 20220 KB Output is correct
4 Correct 0 ms 20220 KB Output is correct
5 Correct 0 ms 20220 KB Output is correct
6 Correct 0 ms 20220 KB Output is correct
7 Correct 0 ms 20220 KB Output is correct
8 Correct 0 ms 20220 KB Output is correct
9 Correct 0 ms 20220 KB Output is correct
10 Correct 0 ms 20220 KB Output is correct
11 Correct 0 ms 20220 KB Output is correct
12 Correct 0 ms 20220 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 20220 KB Output is correct
2 Correct 0 ms 20220 KB Output is correct
3 Correct 0 ms 20220 KB Output is correct
4 Correct 0 ms 20220 KB Output is correct
5 Correct 0 ms 20220 KB Output is correct
6 Correct 0 ms 20220 KB Output is correct
7 Correct 0 ms 20220 KB Output is correct
8 Correct 0 ms 20220 KB Output is correct
9 Correct 0 ms 20220 KB Output is correct
10 Correct 0 ms 20220 KB Output is correct
11 Correct 0 ms 20220 KB Output is correct
12 Correct 0 ms 20220 KB Output is correct
13 Correct 6 ms 20220 KB Output is correct
14 Correct 9 ms 20220 KB Output is correct
15 Correct 13 ms 20220 KB Output is correct
16 Correct 0 ms 20220 KB Output is correct
17 Correct 3 ms 20220 KB Output is correct
18 Correct 3 ms 20220 KB Output is correct
19 Correct 6 ms 20220 KB Output is correct
20 Correct 9 ms 20220 KB Output is correct
21 Correct 6 ms 20220 KB Output is correct
22 Correct 13 ms 20220 KB Output is correct
23 Correct 6 ms 20220 KB Output is correct
24 Correct 9 ms 20220 KB Output is correct

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 20220 KB Output is correct
2 Correct 0 ms 20220 KB Output is correct
3 Correct 0 ms 20220 KB Output is correct
4 Correct 0 ms 20220 KB Output is correct
5 Correct 0 ms 20220 KB Output is correct
6 Correct 0 ms 20220 KB Output is correct
7 Correct 0 ms 20220 KB Output is correct
8 Correct 0 ms 20220 KB Output is correct
9 Correct 0 ms 20220 KB Output is correct
10 Correct 0 ms 20220 KB Output is correct
11 Correct 0 ms 20220 KB Output is correct
12 Correct 0 ms 20220 KB Output is correct
13 Correct 6 ms 20220 KB Output is correct
14 Correct 6 ms 20220 KB Output is correct
15 Correct 9 ms 20220 KB Output is correct
16 Correct 0 ms 20220 KB Output is correct
17 Correct 3 ms 20220 KB Output is correct
18 Correct 3 ms 20220 KB Output is correct
19 Correct 6 ms 20220 KB Output is correct
20 Correct 9 ms 20220 KB Output is correct
21 Correct 9 ms 20220 KB Output is correct
22 Correct 9 ms 20220 KB Output is correct
23 Correct 9 ms 20220 KB Output is correct
24 Correct 9 ms 20220 KB Output is correct
25 Correct 1686 ms 20220 KB Output is correct
26 Execution timed out 2000 ms 20220 KB Execution timed out
27 Halted 0 ms 0 KB -