Submission #154370

#	Time	Username	Problem	Language	Result	Execution time	Memory
154370		username	Bitaro, who Leaps through Time (JOI19_timeleap)	C++14	100 / 100	797 ms	42632 KiB

timeleap

#pragma GCC optimize("O3")
#include<bits/stdc++.h>
#define ll long long
using namespace std;
#define REP(i,j,k) for(int i=(j);i<(k);++i)
#define mid (l+r>>1)
#define lch (idx*2+1)
#define rch (idx*2+2)
#define endl '\n'
#define IOS cin.tie(0),cout.tie(0),ios_base::sync_with_stdio(false)

struct nd{int l,r;ll c;};
const int maxn=1<<19,inf=2e9;
int n,q;
nd dat[2][maxn<<1];

nd merge(nd a,nd b,int t){
	if(t)swap(a,b);
	if(a.c<0){
		if(b.c<0){
			if(a.r<b.l)return nd{a.r,b.l,0};
			else if(b.r<a.l)return nd{a.l,b.r,a.l-b.r};
			else return nd{max(a.l,b.l),min(a.r,b.r),-1};
		}else{
			int s=max(a.l,min(a.r,b.l));
			return nd{s,b.r,b.c+max(0,s-b.l)};
		}
	}else{
		if(b.c<0){
			int t=max(b.l,min(b.r,a.r));
			return nd{a.l,t,a.c+max(0,a.r-t)};
		}else{
			return nd{a.l,b.r,a.c+b.c+max(0,a.r-b.l)};
		}
	}
}

void mnt(int idx){
	dat[0][idx]=merge(dat[0][lch],dat[0][rch],0);
	dat[1][idx]=merge(dat[1][lch],dat[1][rch],1);
}

void ch(int l,int r,int idx,int p,int s,int e){
	if(l+1==r){
		dat[0][idx]=nd{s-l,e-l-1,-1};
		dat[1][idx]=nd{s+l+1,e+l,-1};
	}else{
		if(p<mid)ch(l,mid,lch,p,s,e);
		else ch(mid,r,rch,p,s,e);
		mnt(idx);
	}
}

nd qr(int l,int r,int idx,int a,int b,int t){
	if(b<=l||r<=a)return nd{-inf,inf,-1};
	else if(a<=l&&r<=b)return dat[t][idx];
	else return merge(qr(l,mid,lch,a,b,t),qr(mid,r,rch,a,b,t),t);
}

main(){
	IOS;
	cin>>n>>q;
	REP(i,1,n){
		int l,r;cin>>l>>r;
		ch(1,n,0,i,l,r);
	}
	REP(_,0,q){
		int t,p,s,e,a,b,c,d;cin>>t;
		if(t==1){
			cin>>p>>s>>e;
			ch(1,n,0,p,s,e);
		}else{
			cin>>a>>b>>c>>d,t=a>c;
			if(t)cout<<merge(nd{d+c,d+c,0},merge(qr(1,n,0,c,a,t),nd{b+a,b+a,0},t),t).c<<endl;
			else cout<<merge(nd{b-a,b-a,0},merge(qr(1,n,0,a,c,t),nd{d-c,d-c,0},t),t).c<<endl;
		}
	}
}

Compilation message (stderr)

timeleap.cpp: In function 'void ch(int, int, int, int, int, int)':
timeleap.cpp:6:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define mid (l+r>>1)
              ~^~
timeleap.cpp:48:8: note: in expansion of macro 'mid'
   if(p<mid)ch(l,mid,lch,p,s,e);
        ^~~
timeleap.cpp:6:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define mid (l+r>>1)
              ~^~
timeleap.cpp:48:17: note: in expansion of macro 'mid'
   if(p<mid)ch(l,mid,lch,p,s,e);
                 ^~~
timeleap.cpp:6:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define mid (l+r>>1)
              ~^~
timeleap.cpp:49:11: note: in expansion of macro 'mid'
   else ch(mid,r,rch,p,s,e);
           ^~~
timeleap.cpp: In function 'nd qr(int, int, int, int, int, int)':
timeleap.cpp:6:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define mid (l+r>>1)
              ~^~
timeleap.cpp:57:25: note: in expansion of macro 'mid'
  else return merge(qr(l,mid,lch,a,b,t),qr(mid,r,rch,a,b,t),t);
                         ^~~
timeleap.cpp:6:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define mid (l+r>>1)
              ~^~
timeleap.cpp:57:43: note: in expansion of macro 'mid'
  else return merge(qr(l,mid,lch,a,b,t),qr(mid,r,rch,a,b,t),t);
                                           ^~~
timeleap.cpp: At global scope:
timeleap.cpp:60:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^

• Subtask 1: 4 / 4
• Subtask 2: 30 / 30
• Subtask 3: 66 / 66