oj.uz

Submission #14912

# Submission time Handle Problem Language Result Execution time Memory
14912 2015-07-06T00:29:53 Z gs13068 Palembang Bridges (APIO15_bridge) C++
100 / 100
 586 ms 6328 KB 
#include<cstdio>
#include<algorithm>

int p[111111];
int s[111111];
int q[111111];
int t[111111];
char pp[11],qq[11];
std::pair<int,int> d[444444];
int dn;

int main()
{
	//freopen("input","r",stdin);
	long long res=0;
	int i,j,n,m;
	int fir,sec;
	long long min,now,ang;
	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';
	}

	if(n<=1000)
	{
		res=9e18;
        for(i=0;i<n;i++)
        {
			fir=s[i];
			dn=0;
			for(j=0;j<n;j++)if(p[j]!=q[j]&&(std::max(s[j],t[j])<fir||std::min(s[j],t[j])>fir))
			{
				d[dn++]=std::make_pair(std::min(fir,s[j]+t[j]-fir),1);
				d[dn++]=std::make_pair(std::max(fir,s[j]+t[j]-fir),1);
				d[dn++]=std::make_pair(std::min(s[j],t[j]),-1);
				d[dn++]=std::make_pair(std::max(s[j],t[j]),-1);
			}
			std::sort(d,d+dn);
			min=now=ang=0;
			sec=0;

			for(j=0;j<dn;j++)
			{
				if(j)now+=ang*(d[j].first-d[j-1].first);
				ang+=d[j].second;
				if(now>min)
				{
					min=now;
					sec=d[j].first;
				}
			}

			now=0;
			for(j=0;j<n;j++)
			{
				if(p[j]!=q[j])now+=std::min(std::abs(s[j]-fir)+std::abs(t[j]-fir),std::abs(s[j]-sec)+std::abs(t[j]-sec))+1;
				else now+=std::abs(s[j]-t[j]);
			}

			res=std::min(res,now);

			fir=t[i];
			dn=0;
			for(j=0;j<n;j++)if(p[j]!=q[j]&&(std::max(s[j],t[j])<fir||std::min(s[j],t[j])>fir))
			{
				d[dn++]=std::make_pair(std::min(fir,s[j]+t[j]-fir),1);
				d[dn++]=std::make_pair(std::max(fir,s[j]+t[j]-fir),1);
				d[dn++]=std::make_pair(std::min(s[j],t[j]),-1);
				d[dn++]=std::make_pair(std::max(s[j],t[j]),-1);
			}
			std::sort(d,d+dn);
			min=now=ang=0;
			sec=0;

			for(j=0;j<dn;j++)
			{
				if(j)now+=ang*(d[j].first-d[j-1].first);
				ang+=d[j].second;
				if(now>min)
				{
					min=now;
					sec=d[j].first;
				}
			}

			now=0;
			for(j=0;j<n;j++)
			{
				if(p[j]!=q[j])now+=std::min(std::abs(s[j]-fir)+std::abs(t[j]-fir),std::abs(s[j]-sec)+std::abs(t[j]-sec))+1;
				else now+=std::abs(s[j]-t[j]);
			}

			res=std::min(res,now);
        }

        printf("%lld\n",res);
        return 0;
	}

	sec=s[0];
	for(i=1;i<=15;i++)
	{
		fir=sec;
		dn=0;
        for(j=0;j<n;j++)if(p[j]!=q[j]&&(std::max(s[j],t[j])<fir||std::min(s[j],t[j])>fir))
        {
            d[dn++]=std::make_pair(std::min(fir,s[j]+t[j]-fir),1);
            d[dn++]=std::make_pair(std::max(fir,s[j]+t[j]-fir),1);
            d[dn++]=std::make_pair(std::min(s[j],t[j]),-1);
            d[dn++]=std::make_pair(std::max(s[j],t[j]),-1);
        }
        std::sort(d,d+dn);
		min=now=ang=0;
		sec=s[i%n];
		for(j=0;j<dn;j++)
		{
			if(j)now+=ang*(d[j].first-d[j-1].first);
			ang+=d[j].second;
			if(now>min)
			{
				min=now;
				sec=d[j].first;
			}
		}
	}

	for(j=0;j<n;j++)
	{
		if(p[j]!=q[j])res+=std::min(std::abs(s[j]-fir)+std::abs(t[j]-fir),std::abs(s[j]-sec)+std::abs(t[j]-sec))+1;
		else res+=std::abs(s[j]-t[j]);
	}

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

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:19:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&m,&n);
                     ^
bridge.cpp:25:39: 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:52:38: 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 3 ms 6328 KB Output is correct
2 Correct 0 ms 6328 KB Output is correct
3 Correct 0 ms 6328 KB Output is correct
4 Correct 0 ms 6328 KB Output is correct
5 Correct 0 ms 6328 KB Output is correct
6 Correct 0 ms 6328 KB Output is correct
7 Correct 0 ms 6328 KB Output is correct
8 Correct 0 ms 6328 KB Output is correct
9 Correct 0 ms 6328 KB Output is correct
10 Correct 0 ms 6328 KB Output is correct
11 Correct 0 ms 6328 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6328 KB Output is correct
2 Correct 3 ms 6328 KB Output is correct
3 Correct 0 ms 6328 KB Output is correct
4 Correct 3 ms 6328 KB Output is correct
5 Correct 0 ms 6328 KB Output is correct
6 Correct 3 ms 6328 KB Output is correct
7 Correct 0 ms 6328 KB Output is correct
8 Correct 0 ms 6328 KB Output is correct
9 Correct 3 ms 6328 KB Output is correct
10 Correct 0 ms 6328 KB Output is correct
11 Correct 3 ms 6328 KB Output is correct
12 Correct 46 ms 6328 KB Output is correct
13 Correct 69 ms 6328 KB Output is correct
14 Correct 66 ms 6328 KB Output is correct
15 Correct 39 ms 6328 KB Output is correct
16 Correct 53 ms 6328 KB Output is correct
17 Correct 56 ms 6328 KB Output is correct
18 Correct 63 ms 6328 KB Output is correct
19 Correct 59 ms 6328 KB Output is correct
20 Correct 56 ms 6328 KB Output is correct
21 Correct 76 ms 6328 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 6328 KB Output is correct
2 Correct 0 ms 6328 KB Output is correct
3 Correct 0 ms 6328 KB Output is correct
4 Correct 3 ms 6328 KB Output is correct
5 Correct 3 ms 6328 KB Output is correct
6 Correct 0 ms 6328 KB Output is correct
7 Correct 0 ms 6328 KB Output is correct
8 Correct 3 ms 6328 KB Output is correct
9 Correct 0 ms 6328 KB Output is correct
10 Correct 6 ms 6328 KB Output is correct
11 Correct 3 ms 6328 KB Output is correct
12 Correct 3 ms 6328 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 6328 KB Output is correct
2 Correct 0 ms 6328 KB Output is correct
3 Correct 0 ms 6328 KB Output is correct
4 Correct 3 ms 6328 KB Output is correct
5 Correct 3 ms 6328 KB Output is correct
6 Correct 3 ms 6328 KB Output is correct
7 Correct 0 ms 6328 KB Output is correct
8 Correct 0 ms 6328 KB Output is correct
9 Correct 3 ms 6328 KB Output is correct
10 Correct 3 ms 6328 KB Output is correct
11 Correct 0 ms 6328 KB Output is correct
12 Correct 3 ms 6328 KB Output is correct
13 Correct 46 ms 6328 KB Output is correct
14 Correct 356 ms 6328 KB Output is correct
15 Correct 313 ms 6328 KB Output is correct
16 Correct 6 ms 6328 KB Output is correct
17 Correct 103 ms 6328 KB Output is correct
18 Correct 43 ms 6328 KB Output is correct
19 Correct 16 ms 6328 KB Output is correct
20 Correct 386 ms 6328 KB Output is correct
21 Correct 153 ms 6328 KB Output is correct
22 Correct 476 ms 6328 KB Output is correct
23 Correct 203 ms 6328 KB Output is correct
24 Correct 543 ms 6328 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 6328 KB Output is correct
2 Correct 0 ms 6328 KB Output is correct
3 Correct 0 ms 6328 KB Output is correct
4 Correct 3 ms 6328 KB Output is correct
5 Correct 3 ms 6328 KB Output is correct
6 Correct 3 ms 6328 KB Output is correct
7 Correct 0 ms 6328 KB Output is correct
8 Correct 3 ms 6328 KB Output is correct
9 Correct 3 ms 6328 KB Output is correct
10 Correct 6 ms 6328 KB Output is correct
11 Correct 0 ms 6328 KB Output is correct
12 Correct 3 ms 6328 KB Output is correct
13 Correct 53 ms 6328 KB Output is correct
14 Correct 359 ms 6328 KB Output is correct
15 Correct 349 ms 6328 KB Output is correct
16 Correct 6 ms 6328 KB Output is correct
17 Correct 113 ms 6328 KB Output is correct
18 Correct 43 ms 6328 KB Output is correct
19 Correct 26 ms 6328 KB Output is correct
20 Correct 349 ms 6328 KB Output is correct
21 Correct 163 ms 6328 KB Output is correct
22 Correct 486 ms 6328 KB Output is correct
23 Correct 189 ms 6328 KB Output is correct
24 Correct 489 ms 6328 KB Output is correct
25 Correct 76 ms 6328 KB Output is correct
26 Correct 259 ms 6328 KB Output is correct
27 Correct 333 ms 6328 KB Output is correct
28 Correct 376 ms 6328 KB Output is correct
29 Correct 359 ms 6328 KB Output is correct
30 Correct 176 ms 6328 KB Output is correct
31 Correct 49 ms 6328 KB Output is correct
32 Correct 433 ms 6328 KB Output is correct
33 Correct 213 ms 6328 KB Output is correct
34 Correct 586 ms 6328 KB Output is correct
35 Correct 219 ms 6328 KB Output is correct
36 Correct 566 ms 6328 KB Output is correct
37 Correct 109 ms 6328 KB Output is correct