oj.uz

답안 #253733

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
253733 2020-07-28T15:18:44 Z b00n0rp 3단 점프 (JOI19_jumps) C++17
100 / 100
 2953 ms 125576 KB 
// --------------------------------------------------<TEMPLATE>--------------------------------------------------
// --------------------<optimizations>--------------------


#pragma GCC optimize("Ofast,unroll-loops")
/*
#pragma GCC target("avx,avx2,fma")
*/ 

// -------------------</optimizations>--------------------
 
// ---------------<Headers and namespaces>----------------
#include <bits/stdc++.h>
using namespace std;
 
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
*/
 
// ---------------</Headers and namespaces>---------------
 
// -----------------<Defines and typedefs>----------------
// typedef tree<int,null_type,less<int>,rb_tree_tag, \
tree_order_statistics_node_update> indexed_set; // use less_equal for multiset
// order_of_key (val): returns the no. of values less than val
// find_by_order (k): returns the iterator to kth largest element.(0-based)
 
typedef long double LD;
typedef long long ll;
#define int ll
#define pb push_back
#define mp make_pair
#define REP(i,n) for (int i = 0; i < n; i++)
#define FOR(i,a,b) for (int i = a; i < b; i++)
#define REPD(i,n) for (int i = n-1; i >= 0; i--)
#define FORD(i,a,b) for (int i = a; i >= b; i--)
#define remax(a,b) a = max(a,b)
#define remin(a,b) a = min(a,b)
#define all(v) v.begin(),v.end()
typedef map<int,int> mii;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int,int> pii;
typedef vector<pii> vpii;
#define F first
#define S second
#define PQ(type) priority_queue<type>
#define PQD(type) priority_queue<type,vector<type>,greater<type> >
#define WL(t) while(t --)
#define SZ(x) ((int)(x).size())
#define runtime() ((double)clock() / CLOCKS_PER_SEC)
#define inrange(i,a,b) ((i>=min(a,b)) && (i<=max(a,b)))
 
/*
// -----<SCANF>-----
#define sfi(x) scanf("%d",&x);
#define sfi2(x,y) scanf("%d%d",&x,&y);
#define sfi3(x,y,z) scanf("%d%d%d",&x,&y,&z);
 
#define sfl(x) scanf("%lld",&x);
#define sfl2(x,y) scanf("%lld%lld",&x,&y);
#define sfl3(x,y,z) scanf("%lld%lld%lld",&x,&y,&z);
#define sfl4(x,y,z,x1) scanf("%lld%lld%lld%lld",&x,&y,&z,&x1);
#define sfl5(x,y,z,x1,y1) scanf("%lld%lld%lld%lld%lld",&x,&y,&z,&x1,&y1);
#define sfl6(x,y,z,x1,y1,z1) scanf("%lld%lld%lld%lld%lld%lld",&x,&y,&z,&x1,&y1,&z1);
 
#define sfs(x) scanf("%s",x);
#define sfs2(x,y) scanf("%s%s",x,y);
#define sfs3(x,y,z) scanf("%s%s%s",x,y,z);
// ----</SCANF>-----
 
// ----<PRINTF>-----
#define pfi(x) printf("%d\n",x);
#define pfi2(x,y) printf("%d %d\n",x,y);
#define pfi3(x,y,z) printf("%d %d %d\n",x,y,z);
 
#define pfl(x) printf("%lld\n",x);
#define pfl2(x,y) printf("%lld %lld\n",x,y);
#define pfl3(x,y,z) printf("%lld %lld %lld\n",x,y,z);
 
#define pfs(x) printf("%s\n",x);
#define pfs2(x,y) printf("%s %s\n",x,y);
#define pfs3(x,y,z) printf("%s %s %s\n",x,y,z);
 
#define pwe(x) printf("%lld ",x); // print without end
// ----</PRINTF>----
*/

#define FLSH fflush(stdout)
#define fileIO(name) \
    freopen(name".in", "r", stdin); \
    freopen(name".out", "w", stdout);
#define PRECISION(x) cout << fixed << setprecision(x); 
#define FAST_IO ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
 
// ----------------</Defines and typedefs>----------------
 
// -------------------<Debugging stuff>-------------------
#define TRACE
 
#ifdef TRACE
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <typename Arg1>
void __f(const char* name, Arg1&& arg1){
    cout << name << " : " << arg1 << std::endl;
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args){
    const char* comma = strchr(names + 1, ',');cout.write(names, comma - names) << " : " << arg1<<" | ";__f(comma+1, args...);
}
#else
#define trace(...)
#endif
 
// ------------------</Debugging stuff>-------------------
 
// ------------------------<Consts>-----------------------
const int MAXN = 500005;
const int SQRTN = 1003;
const int LOGN = 22;
const double PI=acos(-1);
 
#ifdef int
const int INF=1e16;
#else
const int INF=1e9;
#endif
 
const int MOD = 1000000007;
const int FMOD = 998244353;
const double eps = 1e-9;

// -----------------------</Consts>-----------------------

/*

// -------------------------<RNG>-------------------------
mt19937 RNG(chrono::steady_clock::now().time_since_epoch().count()); 
#define SHUF(v) shuffle(all(v), RNG);
// Use mt19937_64 for 64 bit random numbers.
 
// ------------------------</RNG>-------------------------
 
// ----------------------<MATH>---------------------------

template<typename T> T gcd(T a, T b){return(b?__gcd(a,b):a);}
template<typename T> T lcm(T a, T b){return(a*(b/gcd(a,b)));}
int add(int a, int b, int c = MOD){int res=a+b;return(res>=c?res-c:res);}
int mod_neg(int a, int b, int c = MOD){int res;if(abs(a-b)<c)res=a-b;else res=(a-b)%c;return(res<0?res+c:res);}
int mul(int a, int b, int c = MOD){ll res=(ll)a*b;return(res>=c?res%c:res);}
int muln(int a, int b, int c = MOD){ll res=(ll)a*b;return ((res%c)+c)%c;}
ll mulmod(ll a,ll b, ll m = MOD){ll q = (ll)(((LD)a*(LD)b)/(LD)m);ll r=a*b-q*m;if(r>m)r%=m;if(r<0)r+=m;return r;}
template<typename T>T expo(T e, T n){T x=1,p=e;while(n){if(n&1)x=x*p;p=p*p;n>>=1;}return x;}
template<typename T>T power(T e, T n, T m = MOD){T x=1,p=e;while(n){if(n&1)x=mul(x,p,m);p=mul(p,p,m);n>>=1;}return x;}
template<typename T>T extended_euclid(T a, T b, T &x, T &y){T xx=0,yy=1;y=0;x=1;while(b){T q=a/b,t=b;b=a%b;a=t;\
t=xx;xx=x-q*xx;x=t;t=yy;yy=y-q*yy;y=t;}return a;}
template<typename T>T mod_inverse(T a, T n = MOD){T x,y,z=0;T d=extended_euclid(a,n,x,y);return(d>1?-1:mod_neg(x,z,n));}
 
const int FACSZ = 1; // Make sure to change this
 
int fact[FACSZ],ifact[FACSZ];
 
void precom(int c = MOD){
    fact[0] = 1;
    FOR(i,1,FACSZ) fact[i] = mul(fact[i-1],i,c);
    ifact[FACSZ-1] = mod_inverse(fact[FACSZ-1],c);
    REPD(i,FACSZ-1){
        ifact[i] = mul(i+1,ifact[i+1],c);
    }
}
 
int ncr(int n,int r,int c = MOD){
    return mul(mul(ifact[r],ifact[n-r],c),fact[n],c);
} 
*/

// ----------------------</MATH>--------------------------
// --------------------------------------------------</TEMPLATE>--------------------------------------------------
 
void solvethetestcase();
 
signed main(){
    // comment when using scanf,printf
    FAST_IO

    int t = 1;
    // (UNCOMMENT FOR MULTIPLE TEST CASES) \
    cin >> t;
    FOR(testcase,1,t+1){
        // (UNCOMMENT FOR CODEJAM) \
        printf("Case #%lld: ",testcase); 
        solvethetestcase();
    }
}   
 
int n,q;
int a[MAXN],b[MAXN],c[MAXN];
int ans[MAXN];
pair<pii,int> quer[MAXN];

bool cmp(pair<pii,int> x, pair<pii,int> y){
    return x.F.S < y.F.S;
}
vpii v;
vpii trigger[MAXN];

pii seg[4*MAXN];
int lazy[4*MAXN];

void push(int node,int l,int r){
	if(l != r){
		remax(lazy[node*2],lazy[node]);
		remax(lazy[node*2+1],lazy[node]);
	}
	remax(seg[node].S,seg[node].F+lazy[node]);
	lazy[node] = 0;
}

void upd1(int node,int l,int r,int pos,int val){
	push(node,l,r);
	if(l > pos or r < pos) return;
	if(l == r){
		remax(seg[node].F,val);
		return;
	}
	int m = (l+r)/2;
	upd1(2*node,l,m,pos,val);
	upd1(2*node+1,m+1,r,pos,val);
	seg[node].F = max(seg[2*node].F,seg[2*node+1].F);
	seg[node].S = max(seg[2*node].S,seg[2*node+1].S);
	// trace(1,node,l,r,seg[node].F,seg[node].S);
}

void upd2(int node,int l,int r,int x,int y,int val){
	push(node,l,r);
	if(x > r or y < l) return;
	if(l >= x and r <= y){
		remax(lazy[node],val);
		push(node,l,r);
		return;
	}
	int m = (l+r)/2;
	upd2(2*node,l,m,x,y,val);
	upd2(2*node+1,m+1,r,x,y,val);
	seg[node].F = max(seg[2*node].F,seg[2*node+1].F);
	seg[node].S = max(seg[2*node].S,seg[2*node+1].S);
	// trace(2,node,l,r,seg[node].F,seg[node].S);
}

int query(int node,int l,int r,int x,int y){
	push(node,l,r);
	if(x > r or y < l) return 0;
	if(l >= x and r <= y){
		// trace(3,node,l,r,seg[node].F,seg[node].S);
		return seg[node].S;
	}
	int m = (l+r)/2;
	// trace(node,l,r,seg[node].F,seg[node].S);
	return max(query(2*node,l,m,x,y),query(2*node+1,m+1,r,x,y));
} 

void solvethetestcase(){
    cin >> n;
    FOR(i,1,n+1){
        cin >> a[i];
        v.pb({i,i+1});
    }
    cin >> q;
    FOR(i,1,q+1){
        cin >> quer[i].F.F >> quer[i].F.S;
        quer[i].S = i;
    }
    sort(quer+1,quer+1+q,cmp);
    stack<int> s;
    FOR(i,1,n+1){
        while(s.size() and a[s.top()] <= a[i]){
            v.pb({s.top(),i});
            s.pop();
        }
        s.push(i);
    }
    while(s.size()) s.pop();
    FORD(i,n,1){
        while(s.size() and a[s.top()] <= a[i]){
            v.pb({i,s.top()});
            s.pop();
        }
        s.push(i);
    }
    for(auto x:v){
    	if(2*x.S-x.F <= n){
    		trigger[2*x.S-x.F].pb(x);
    	}
    }
    int cur = 1;
    FOR(i,1,q+1){
    	while(cur <= quer[i].F.S){
    		for(auto x:trigger[cur]){
    			upd1(1,1,n,x.F,a[x.F]+a[x.S]);
    		}
    		upd2(1,1,n,1,cur-1,a[cur]);
    		cur++;
    	}
    	ans[quer[i].S] = query(1,1,n,quer[i].F.F,quer[i].F.S);
    	// cout << quer[i].S << " " << ans[quer[i].S]  << endl;
    }
    FOR(i,1,q+1) cout << ans[i] << endl;
}

Compilation message

jumps.cpp:25:1: warning: multi-line comment [-Wcomment]
 // typedef tree<int,null_type,less<int>,rb_tree_tag, \
 ^
jumps.cpp:189:5: warning: multi-line comment [-Wcomment]
     // (UNCOMMENT FOR MULTIPLE TEST CASES) \
     ^
jumps.cpp:192:9: warning: multi-line comment [-Wcomment]
         // (UNCOMMENT FOR CODEJAM) \
         ^

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 12160 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 11 ms 12160 KB Output is correct
4 Correct 9 ms 12160 KB Output is correct
5 Correct 11 ms 12160 KB Output is correct
6 Correct 8 ms 12160 KB Output is correct
7 Correct 8 ms 12160 KB Output is correct
8 Correct 9 ms 12160 KB Output is correct
9 Correct 8 ms 12160 KB Output is correct
10 Correct 11 ms 12160 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 12160 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 11 ms 12160 KB Output is correct
4 Correct 9 ms 12160 KB Output is correct
5 Correct 11 ms 12160 KB Output is correct
6 Correct 8 ms 12160 KB Output is correct
7 Correct 8 ms 12160 KB Output is correct
8 Correct 9 ms 12160 KB Output is correct
9 Correct 8 ms 12160 KB Output is correct
10 Correct 11 ms 12160 KB Output is correct
11 Correct 1342 ms 33900 KB Output is correct
12 Correct 1582 ms 33660 KB Output is correct
13 Correct 1451 ms 33812 KB Output is correct
14 Correct 1288 ms 33960 KB Output is correct
15 Correct 1622 ms 34192 KB Output is correct
16 Correct 1425 ms 33272 KB Output is correct
17 Correct 1646 ms 33180 KB Output is correct
18 Correct 1317 ms 33252 KB Output is correct
19 Correct 1463 ms 33772 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 385 ms 51512 KB Output is correct
2 Correct 262 ms 43420 KB Output is correct
3 Correct 256 ms 41856 KB Output is correct
4 Correct 350 ms 51644 KB Output is correct
5 Correct 380 ms 51608 KB Output is correct
6 Correct 329 ms 51520 KB Output is correct
7 Correct 350 ms 51648 KB Output is correct
8 Correct 343 ms 51492 KB Output is correct
9 Correct 354 ms 51648 KB Output is correct

Subtask #4
54.0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 12160 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 11 ms 12160 KB Output is correct
4 Correct 9 ms 12160 KB Output is correct
5 Correct 11 ms 12160 KB Output is correct
6 Correct 8 ms 12160 KB Output is correct
7 Correct 8 ms 12160 KB Output is correct
8 Correct 9 ms 12160 KB Output is correct
9 Correct 8 ms 12160 KB Output is correct
10 Correct 11 ms 12160 KB Output is correct
11 Correct 1342 ms 33900 KB Output is correct
12 Correct 1582 ms 33660 KB Output is correct
13 Correct 1451 ms 33812 KB Output is correct
14 Correct 1288 ms 33960 KB Output is correct
15 Correct 1622 ms 34192 KB Output is correct
16 Correct 1425 ms 33272 KB Output is correct
17 Correct 1646 ms 33180 KB Output is correct
18 Correct 1317 ms 33252 KB Output is correct
19 Correct 1463 ms 33772 KB Output is correct
20 Correct 385 ms 51512 KB Output is correct
21 Correct 262 ms 43420 KB Output is correct
22 Correct 256 ms 41856 KB Output is correct
23 Correct 350 ms 51644 KB Output is correct
24 Correct 380 ms 51608 KB Output is correct
25 Correct 329 ms 51520 KB Output is correct
26 Correct 350 ms 51648 KB Output is correct
27 Correct 343 ms 51492 KB Output is correct
28 Correct 354 ms 51648 KB Output is correct
29 Correct 2475 ms 125356 KB Output is correct
30 Correct 2275 ms 104688 KB Output is correct
31 Correct 2272 ms 100680 KB Output is correct
32 Correct 2488 ms 125360 KB Output is correct
33 Correct 2555 ms 125104 KB Output is correct
34 Correct 2487 ms 124444 KB Output is correct
35 Correct 2555 ms 124608 KB Output is correct
36 Correct 2514 ms 124536 KB Output is correct
37 Correct 2519 ms 124980 KB Output is correct
38 Correct 2338 ms 125200 KB Output is correct
39 Correct 2335 ms 125096 KB Output is correct
40 Correct 2244 ms 123536 KB Output is correct
41 Correct 2200 ms 123308 KB Output is correct
42 Correct 2273 ms 123236 KB Output is correct
43 Correct 2341 ms 124068 KB Output is correct
44 Correct 2376 ms 125104 KB Output is correct
45 Correct 2359 ms 125144 KB Output is correct
46 Correct 2365 ms 123608 KB Output is correct
47 Correct 2331 ms 123480 KB Output is correct
48 Correct 2393 ms 123496 KB Output is correct
49 Correct 2386 ms 124604 KB Output is correct
50 Correct 2565 ms 125084 KB Output is correct
51 Correct 2399 ms 125396 KB Output is correct
52 Correct 2425 ms 124408 KB Output is correct
53 Correct 2444 ms 124220 KB Output is correct
54 Correct 2953 ms 124432 KB Output is correct
55 Correct 2806 ms 125576 KB Output is correct