oj.uz

답안 #134466

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
134466 2019-07-22T18:08:34 Z model_code 3단 점프 (JOI19_jumps) C++17
100 / 100
 1531 ms 66696 KB 
#include <bits/stdc++.h>
using namespace std;

using uint=unsigned;
using ll=long long;
using ull=unsigned long long;
#define int ll

#define FOR(i,a,b) for(int i=int(a);i<int(b);i++)
#define rep(i,b) FOR(i,0,b)
#define ROF(i,a,b) for(int i=int(b)-1;i>=a;i--)
#define per(i,b) ROF(i,0,b)
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define eb emplace_back
#define all(x) x.begin(),x.end()
auto& errStream=cerr;
#ifdef LOCAL
#define cerr (cerr<<"-- line "<<__LINE__<<" -- ")
#else
class CerrDummy{}cerrDummy;
template<class T>
CerrDummy& operator<<(CerrDummy&cd,const T&){
	return cd;
}
using charTDummy=char;
using traitsDummy=char_traits<charTDummy>;
CerrDummy& operator<<(CerrDummy&cd,basic_ostream<charTDummy,traitsDummy>&(basic_ostream<charTDummy,traitsDummy>&)){
	return cd;
}
#define cerr cerrDummy
#endif
#define reach cerr<<"reached"<<endl
void dmpr(decltype(cerr)&os){os<<endl;}
template<class T,class... Args>
void dmpr(decltype(cerr)&os,const T&t,const Args&... args){
	os<<t<<" ";
	dmpr(os,args...);
}
#define dmp(...) dmpr(cerr,##__VA_ARGS__)
#define zero(x) memset(x,0,sizeof(x))
#define one(x) memset(x,-1,sizeof(x))
#define fs first
#define sc second
#define bg begin()
#define ed end()

template<class T> using V=vector<T>;
template<class T> using VV=V<V<T>>;

using pi=pair<int,int>;
using vi=vector<int>;
using ld=long double;

template<class T,class U>
ostream& operator<<(ostream& os,const pair<T,U>& p){
	os<<"("<<p.first<<","<<p.second<<")";
	return os;
}

template<class T>
ostream& operator <<(ostream& os,const vector<T>& v){
	os<<"{";
	rep(i,(int)v.size()){
		if(i)os<<",";
		os<<v[i];
	}
	os<<"}";
	return os;
}

template<int i,class T>
void print_tuple(ostream&,const T&){
}

template<int i,class T,class H,class ...Args>
void print_tuple(ostream&os,const T&t){
	if(i)os<<",";
	os<<get<i>(t);
	print_tuple<i+1,T,Args...>(os,t);
}

template<class ...Args>
ostream& operator<<(ostream&os,const tuple<Args...>&t){
	os<<"(";
	print_tuple<0,tuple<Args...>,Args...>(os,t);
	return os<<")";
}

ll read(){
	ll i;
	scanf("%lld",&i);
	return i;
}

void printSpace(){
	printf(" ");
}

void printEoln(){
	printf("\n");
}

void print(ll x,int suc=1){
	printf("%lld",x);
	if(suc==1)
		printEoln();
	if(suc==2)
		printSpace();
}

vi readvi(int n,int off=0){
	vi v(n);
	rep(i,n)v[i]=read()+off;
	return v;
}

template<class T>
void print(const vector<T>&v,int suc=1){
	rep(i,v.size())
		print(v[i],i==int(v.size())-1?suc:2);
}

string readString(){
	static char buf[3341000];
	scanf("%s",buf);
	return string(buf);
}

char* readCharArray(){
	static char buf[3341000];
	static int bufUsed=0;
	char* ret=buf+bufUsed;
	scanf("%s",ret);
	bufUsed+=strlen(ret)+1;
	return ret;
}

template<class T,class U>
void chmax(T& a,U b){
	if(a<b)
		a=b;
}

template<class T,class U>
void chmin(T& a,U b){
	if(b<a)
		a=b;
}

template<class T>
T Sq(const T& t){
	return t*t;
}

//#define CAPITAL
void Yes(bool ex=true){
	#ifdef CAPITAL
	cout<<"YES"<<endl;
	#else
	cout<<"Yes"<<endl;
	#endif
	if(ex)exit(0);
}
void No(bool ex=true){
	#ifdef CAPITAL
	cout<<"NO"<<endl;
	#else
	cout<<"No"<<endl;
	#endif
	if(ex)exit(0);
}

const ll infLL=LLONG_MAX/3;

#ifdef int
const int inf=infLL;
#else
const int inf=INT_MAX/2-100;
#endif

constexpr ll TEN(int n){
	return n==0?1:TEN(n-1)*10;
}

template<class T>
vector<T> uni(const vector<T>&vv){
	auto v(vv);
	sort(all(v));
	v.erase(unique(all(v)),v.end());
	return v;
}
template<class T>
void mkuni(vector<T>&v){
	sort(all(v));
	v.erase(unique(all(v)),v.end());
}

//ayasii
int topbit(signed t){
	return t==0?-1:31-__builtin_clz(t);
}
int topbit(ll t){
	return t==0?-1:63-__builtin_clzll(t);
}
int popcount(signed t){
	return __builtin_popcount(t);
}
int popcount(ll t){
	return __builtin_popcountll(t);
}
bool ispow2(int i){
	return i&&(i&-i)==i;
}

bool inc(int a,int b,int c){
	return a<=b&&b<=c;
}

template<class Node>
struct SegTreeBeats{
	V<Node> buf;
	int s;
	template<class T>
	SegTreeBeats(const V<T>& a){
		int n=a.size();
		s=1;
		while(s<n)s*=2;
		buf.resize(s*2);
		rep(i,n)
			buf[s+i]=Node(a[i]);
		ROF(i,1,s)
			upd(i);
	}
	void push(int i){
		buf[i].push(buf[i*2],buf[i*2+1]);
	}
	void upd(int i){
		buf[i].upd(buf[i*2],buf[i*2+1]);
	}
	template<class F,class... Args>
	void chr(int l,int r,int i,int b,int e,F f,Args... args){
		if(e<=l||r<=b)
			return;
		if(b<=l&&r<=e){
			if((buf[i].*f)(args...)){
				return;
			}
		}
		push(i);
		int m=(l+r)/2;
		chr(l,m,i*2,b,e,f,args...);
		chr(m,r,i*2+1,b,e,f,args...);
		upd(i);
	}
	template<class F,class... Args>
	void ch(int b,int e,F f,Args... args){
		if(b<e)
			chr(0,s,1,b,e,f,args...);
	}
	template<class F,class G,class H>
	decltype((declval<Node>().*F())()) getr(int l,int r,int i,int b,int e,F f,G g,H h){
		if(e<=l||r<=b)
			return h;
		if(b<=l&&r<=e)
			return (buf[i].*f)();
		push(i);
		int m=(l+r)/2;
		return g(getr(l,m,i*2,b,e,f,g,h),getr(m,r,i*2+1,b,e,f,g,h));
	}
	template<class F,class G,class H>
	decltype((declval<Node>().*F())()) get(int b,int e,F f,G g,H h){
		return getr(0,s,1,b,e,f,g,h);
	}
};

//usage

struct Node{
	int ad,raw,mx;
	Node(int v=0){
		ad=0;
		raw=mx=v;
	}
	void lazy(int v){
		chmax(ad,v);
		chmax(mx,raw+ad);
	}
	void push(Node&x,Node&y){
		x.lazy(ad);
		y.lazy(ad);
	}
	void upd(const Node&x,const Node&y){
		raw=max(x.raw,y.raw);
		mx=max(x.mx,y.mx);
	}
	bool chad(int v){
		lazy(v);
		return true;
	}
	int getmx(){return mx;}
};

signed main(){
	int n=read();
	vi a=readvi(n);
	SegTreeBeats<Node> seg(a);
	int q=read();
	vi ans(q);
	VV<pi> qs(n);
	rep(i,q){
		int l=read()-1,r=read();
		qs[l].eb(r,i);
	}
	vi idx;
	const auto upd=[&](int i,int j){
		int k=j*2-i;
		if(k<n)
			seg.ch(k,n,&Node::chad,a[i]+a[j]);
	};
	per(i,n){
		while(idx.size()){
			int j=idx.back();
			upd(i,j);
			if(a[i]<a[j])
				break;
			idx.pop_back();
		}
		idx.pb(i);
		
		for(auto p:qs[i]){
			ans[p.sc]=seg.get(i+2,p.fs,&Node::getmx,[&](int x,int y){return max(x,y);},-inf);
		}
	}
	rep(i,q)
		print(ans[i]);
}

Compilation message

jumps.cpp: In function 'll read()':
jumps.cpp:93:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld",&i);
  ~~~~~^~~~~~~~~~~
jumps.cpp: In function 'std::__cxx11::string readString()':
jumps.cpp:127:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",buf);
  ~~~~~^~~~~~~~~~
jumps.cpp: In function 'char* readCharArray()':
jumps.cpp:135:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",ret);
  ~~~~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 452 ms 22356 KB Output is correct
12 Correct 434 ms 22420 KB Output is correct
13 Correct 438 ms 22392 KB Output is correct
14 Correct 433 ms 22392 KB Output is correct
15 Correct 433 ms 22392 KB Output is correct
16 Correct 448 ms 21912 KB Output is correct
17 Correct 434 ms 22008 KB Output is correct
18 Correct 433 ms 21672 KB Output is correct
19 Correct 439 ms 22312 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 263 ms 19028 KB Output is correct
2 Correct 152 ms 21152 KB Output is correct
3 Correct 150 ms 18956 KB Output is correct
4 Correct 262 ms 18952 KB Output is correct
5 Correct 264 ms 19064 KB Output is correct
6 Correct 255 ms 18936 KB Output is correct
7 Correct 253 ms 18936 KB Output is correct
8 Correct 254 ms 19064 KB Output is correct
9 Correct 259 ms 18936 KB Output is correct

Subtask #4
54.0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 452 ms 22356 KB Output is correct
12 Correct 434 ms 22420 KB Output is correct
13 Correct 438 ms 22392 KB Output is correct
14 Correct 433 ms 22392 KB Output is correct
15 Correct 433 ms 22392 KB Output is correct
16 Correct 448 ms 21912 KB Output is correct
17 Correct 434 ms 22008 KB Output is correct
18 Correct 433 ms 21672 KB Output is correct
19 Correct 439 ms 22312 KB Output is correct
20 Correct 263 ms 19028 KB Output is correct
21 Correct 152 ms 21152 KB Output is correct
22 Correct 150 ms 18956 KB Output is correct
23 Correct 262 ms 18952 KB Output is correct
24 Correct 264 ms 19064 KB Output is correct
25 Correct 255 ms 18936 KB Output is correct
26 Correct 253 ms 18936 KB Output is correct
27 Correct 254 ms 19064 KB Output is correct
28 Correct 259 ms 18936 KB Output is correct
29 Correct 1516 ms 62712 KB Output is correct
30 Correct 1193 ms 66696 KB Output is correct
31 Correct 1233 ms 62604 KB Output is correct
32 Correct 1511 ms 62692 KB Output is correct
33 Correct 1507 ms 62720 KB Output is correct
34 Correct 1488 ms 62200 KB Output is correct
35 Correct 1495 ms 62076 KB Output is correct
36 Correct 1510 ms 61928 KB Output is correct
37 Correct 1531 ms 62552 KB Output is correct
38 Correct 1156 ms 65380 KB Output is correct
39 Correct 1138 ms 65388 KB Output is correct
40 Correct 1115 ms 63620 KB Output is correct
41 Correct 1106 ms 63352 KB Output is correct
42 Correct 1115 ms 63344 KB Output is correct
43 Correct 1140 ms 64280 KB Output is correct
44 Correct 1232 ms 65648 KB Output is correct
45 Correct 1233 ms 65504 KB Output is correct
46 Correct 1206 ms 64024 KB Output is correct
47 Correct 1180 ms 63816 KB Output is correct
48 Correct 1210 ms 63788 KB Output is correct
49 Correct 1184 ms 65128 KB Output is correct
50 Correct 1305 ms 65856 KB Output is correct
51 Correct 1308 ms 65784 KB Output is correct
52 Correct 1295 ms 64904 KB Output is correct
53 Correct 1275 ms 64816 KB Output is correct
54 Correct 1279 ms 64832 KB Output is correct
55 Correct 1302 ms 65572 KB Output is correct