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답안 #42586

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
42586 2018-02-28T13:38:26 Z fefe Palembang Bridges (APIO15_bridge) C++14
100 / 100
 689 ms 53100 KB 
#include<bits/stdc++.h>
#define MAX_N 100005
#define inf (1LL<<60)
#define pb push_back
#define fi first
#define se second
using namespace std;
typedef long long LL;
typedef pair<LL,LL> pil;
struct node{
	LL cnt,sum;
	node *l,*r;
	node(LL cnt,LL sum,node *l,node *r):cnt(cnt),sum(sum),l(l),r(r){}
}*R1,*R2;
LL n,k,m;
LL ans,aa;
vector<LL> X;
pil arr[MAX_N];
pil serch(LL idx,node *x,LL cnt,LL p){
	if(idx<0 && p>=X.size())	return {0,0};
	if(idx<0)	return {X[p],X[p]*cnt};
	if(x->l->cnt<cnt){
		pil q=serch(idx-1,x->r,cnt-x->l->cnt,(p|(1LL<<idx)));
		q.se+=x->l->sum;
		return q;
	}
	return serch(idx-1,x->l,cnt,p);
}
LL read(node *RX){
	pil p=serch(17,RX,RX->cnt/2,0);
	return (RX->cnt/2)*p.fi-p.se+(RX->sum-p.se)-(RX->cnt-RX->cnt/2)*p.fi;
}
void make_tree(LL idx,node *RX){
	if(idx<0)	return;
	RX->l=new node(0,0,NULL,NULL);
	RX->r=new node(0,0,NULL,NULL);
	make_tree(idx-1,RX->l);make_tree(idx-1,RX->r);
}
void update(LL idx,node *RX,LL p,LL x){
	RX->cnt+=x;
	RX->sum+=x*X[p];
	if(idx<0)	return;
	if(p>>idx&(1LL))	update(idx-1,RX->r,p,x);
	else	update(idx-1,RX->l,p,x);
}
int main(){
	LL i,x;
	char a[5],b[5];
	scanf("%lld %lld",&k,&n);
	for(i=1;i<=n;i++){
		scanf("%s %lld %s %lld",a,&arr[m].fi,b,&arr[m].se);
		if(a[0]==b[0]){
			aa+=abs(arr[m].fi-arr[m].se);
			continue;
		}
		X.pb(arr[m].fi);X.pb(arr[m].se);
		m++;
		aa++;
	}
	sort(X.begin(),X.end());X.erase(unique(X.begin(),X.end()),X.end());
	sort(arr,arr+m,[&](const pil x,const pil y){
		return x.fi+x.se<y.fi+y.se;
	});
	R1=new node(0,0,NULL,NULL);make_tree(17,R1);
	R2=new node(0,0,NULL,NULL);make_tree(17,R2);
	for(i=0;i<m;i++){
		update(17,R2,(lower_bound(X.begin(),X.end(),arr[i].fi)-X.begin()),1);
		update(17,R2,(lower_bound(X.begin(),X.end(),arr[i].se)-X.begin()),1);
	}
	ans=read(R2);
	if(k==1)	return !printf("%lld\n",aa+ans);
	for(i=0;i<m;i++){
		update(17,R1,(lower_bound(X.begin(),X.end(),arr[i].fi)-X.begin()),1);
		update(17,R1,(lower_bound(X.begin(),X.end(),arr[i].se)-X.begin()),1);
		update(17,R2,(lower_bound(X.begin(),X.end(),arr[i].fi)-X.begin()),-1);
		update(17,R2,(lower_bound(X.begin(),X.end(),arr[i].se)-X.begin()),-1);
		x=read(R1)+read(R2);
		ans=min(ans,x);
	}
	printf("%lld\n",aa+ans);
	return 0;
}

Compilation message

bridge.cpp: In function 'pil serch(LL, node*, LL, LL)':
bridge.cpp:20:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(idx<0 && p>=X.size()) return {0,0};
               ^
bridge.cpp: In function 'int main()':
bridge.cpp:49:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld %lld",&k,&n);
                          ^
bridge.cpp:51:53: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s %lld %s %lld",a,&arr[m].fi,b,&arr[m].se);
                                                     ^

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 62 ms 49528 KB Output is correct
2 Correct 61 ms 49648 KB Output is correct
3 Correct 87 ms 49816 KB Output is correct
4 Correct 62 ms 49816 KB Output is correct
5 Correct 83 ms 49816 KB Output is correct
6 Correct 67 ms 49816 KB Output is correct
7 Correct 63 ms 49816 KB Output is correct
8 Correct 64 ms 49884 KB Output is correct
9 Correct 63 ms 49884 KB Output is correct
10 Correct 63 ms 49884 KB Output is correct
11 Correct 63 ms 49884 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 62 ms 49884 KB Output is correct
2 Correct 71 ms 49884 KB Output is correct
3 Correct 68 ms 49884 KB Output is correct
4 Correct 63 ms 49884 KB Output is correct
5 Correct 72 ms 49900 KB Output is correct
6 Correct 71 ms 49900 KB Output is correct
7 Correct 62 ms 49900 KB Output is correct
8 Correct 68 ms 49900 KB Output is correct
9 Correct 62 ms 49900 KB Output is correct
10 Correct 72 ms 49900 KB Output is correct
11 Correct 62 ms 49900 KB Output is correct
12 Correct 125 ms 53080 KB Output is correct
13 Correct 277 ms 53080 KB Output is correct
14 Correct 153 ms 53080 KB Output is correct
15 Correct 165 ms 53080 KB Output is correct
16 Correct 125 ms 53080 KB Output is correct
17 Correct 163 ms 53080 KB Output is correct
18 Correct 149 ms 53080 KB Output is correct
19 Correct 163 ms 53080 KB Output is correct
20 Correct 128 ms 53080 KB Output is correct
21 Correct 153 ms 53080 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 65 ms 53080 KB Output is correct
2 Correct 63 ms 53080 KB Output is correct
3 Correct 62 ms 53080 KB Output is correct
4 Correct 68 ms 53080 KB Output is correct
5 Correct 63 ms 53080 KB Output is correct
6 Correct 74 ms 53080 KB Output is correct
7 Correct 62 ms 53080 KB Output is correct
8 Correct 73 ms 53080 KB Output is correct
9 Correct 62 ms 53080 KB Output is correct
10 Correct 61 ms 53080 KB Output is correct
11 Correct 72 ms 53080 KB Output is correct
12 Correct 62 ms 53080 KB Output is correct

Subtask #4
32.0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 71 ms 53080 KB Output is correct
2 Correct 63 ms 53080 KB Output is correct
3 Correct 63 ms 53080 KB Output is correct
4 Correct 64 ms 53080 KB Output is correct
5 Correct 61 ms 53080 KB Output is correct
6 Correct 65 ms 53080 KB Output is correct
7 Correct 61 ms 53080 KB Output is correct
8 Correct 62 ms 53080 KB Output is correct
9 Correct 61 ms 53080 KB Output is correct
10 Correct 61 ms 53080 KB Output is correct
11 Correct 62 ms 53080 KB Output is correct
12 Correct 63 ms 53080 KB Output is correct
13 Correct 69 ms 53080 KB Output is correct
14 Correct 66 ms 53080 KB Output is correct
15 Correct 64 ms 53080 KB Output is correct
16 Correct 70 ms 53080 KB Output is correct
17 Correct 62 ms 53080 KB Output is correct
18 Correct 62 ms 53080 KB Output is correct
19 Correct 63 ms 53080 KB Output is correct
20 Correct 68 ms 53080 KB Output is correct
21 Correct 63 ms 53080 KB Output is correct
22 Correct 66 ms 53080 KB Output is correct
23 Correct 67 ms 53080 KB Output is correct
24 Correct 64 ms 53080 KB Output is correct

Subtask #5
37.0 / 37.0

# 결과 실행 시간 메모리 Grader output
1 Correct 62 ms 53080 KB Output is correct
2 Correct 61 ms 53080 KB Output is correct
3 Correct 62 ms 53080 KB Output is correct
4 Correct 62 ms 53080 KB Output is correct
5 Correct 68 ms 53080 KB Output is correct
6 Correct 73 ms 53080 KB Output is correct
7 Correct 68 ms 53080 KB Output is correct
8 Correct 76 ms 53080 KB Output is correct
9 Correct 61 ms 53080 KB Output is correct
10 Correct 61 ms 53080 KB Output is correct
11 Correct 63 ms 53080 KB Output is correct
12 Correct 65 ms 53080 KB Output is correct
13 Correct 64 ms 53080 KB Output is correct
14 Correct 63 ms 53080 KB Output is correct
15 Correct 65 ms 53080 KB Output is correct
16 Correct 62 ms 53080 KB Output is correct
17 Correct 63 ms 53080 KB Output is correct
18 Correct 62 ms 53080 KB Output is correct
19 Correct 72 ms 53080 KB Output is correct
20 Correct 64 ms 53080 KB Output is correct
21 Correct 63 ms 53080 KB Output is correct
22 Correct 72 ms 53080 KB Output is correct
23 Correct 64 ms 53080 KB Output is correct
24 Correct 64 ms 53080 KB Output is correct
25 Correct 165 ms 53080 KB Output is correct
26 Correct 187 ms 53080 KB Output is correct
27 Correct 659 ms 53080 KB Output is correct
28 Correct 671 ms 53080 KB Output is correct
29 Correct 689 ms 53080 KB Output is correct
30 Correct 337 ms 53080 KB Output is correct
31 Correct 170 ms 53080 KB Output is correct
32 Correct 254 ms 53080 KB Output is correct
33 Correct 292 ms 53080 KB Output is correct
34 Correct 268 ms 53080 KB Output is correct
35 Correct 187 ms 53080 KB Output is correct
36 Correct 270 ms 53100 KB Output is correct
37 Correct 172 ms 53100 KB Output is correct