Submission #143052

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
143052	2019-08-12T19:00:33 Z	Benq	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	13 / 100	1484 ms	174712 KB

sortbooks

#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")

#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/rope>

using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
 
typedef long long ll;
typedef long double ld;
typedef complex<ld> cd;

typedef pair<int, int> pi;
typedef pair<ll,ll> pl;
typedef pair<ld,ld> pd;

typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
typedef vector<cd> vcd;

template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;

#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define F0R(i, a) for (int i = 0; i < (a); i++)
#define FORd(i,a,b) for (int i = (b)-1; i >= (a); i--)
#define F0Rd(i,a) for (int i = (a)-1; i >= 0; i--)
#define trav(a, x) for (auto& a : x)

#define mp make_pair
#define pb push_back
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound

#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rsz resize

const int MOD = 1000000007; // 998244353
const ll INF = 1e18;
const int MX = 1000005;
const ld PI = 4*atan((ld)1);

template<class T> void ckmin(T &a, T b) { a = min(a, b); }
template<class T> void ckmax(T &a, T b) { a = max(a, b); }

namespace input {
    template<class T> void re(complex<T>& x);
    template<class T1, class T2> void re(pair<T1,T2>& p);
    template<class T> void re(vector<T>& a);
    template<class T, size_t SZ> void re(array<T,SZ>& a);

    template<class T> void re(T& x) { cin >> x; }
    void re(double& x) { string t; re(t); x = stod(t); }
    void re(ld& x) { string t; re(t); x = stold(t); }
    template<class Arg, class... Args> void re(Arg& first, Args&... rest) { 
        re(first); re(rest...); 
    }

    template<class T> void re(complex<T>& x) { T a,b; re(a,b); x = cd(a,b); }
    template<class T1, class T2> void re(pair<T1,T2>& p) { re(p.f,p.s); }
    template<class T> void re(vector<T>& a) { F0R(i,sz(a)) re(a[i]); }
    template<class T, size_t SZ> void re(array<T,SZ>& a) { F0R(i,SZ) re(a[i]); }
}

using namespace input;

namespace output {
    template<class T1, class T2> void pr(const pair<T1,T2>& x);
    template<class T, size_t SZ> void pr(const array<T,SZ>& x);
    template<class T> void pr(const vector<T>& x);
    template<class T> void pr(const set<T>& x);
    template<class T1, class T2> void pr(const map<T1,T2>& x);

    template<class T> void pr(const T& x) { cout << x; }
    template<class Arg, class... Args> void pr(const Arg& first, const Args&... rest) { 
        pr(first); pr(rest...); 
    }

    template<class T1, class T2> void pr(const pair<T1,T2>& x) { 
        pr("{",x.f,", ",x.s,"}"); 
    }
    template<class T> void prContain(const T& x) {
        pr("{");
        bool fst = 1; for (const auto& a: x) pr(!fst?", ":"",a), fst = 0; // const needed for vector<bool>
        pr("}");
    }
    template<class T, size_t SZ> void pr(const array<T,SZ>& x) { prContain(x); }
    template<class T> void pr(const vector<T>& x) { prContain(x); }
    template<class T> void pr(const set<T>& x) { prContain(x); }
    template<class T1, class T2> void pr(const map<T1,T2>& x) { prContain(x); }
    
    void ps() { pr("\n"); }
    template<class Arg> void ps(const Arg& first) { 
        pr(first); ps(); // no space at end of line
    }
    template<class Arg, class... Args> void ps(const Arg& first, const Args&... rest) { 
        pr(first," "); ps(rest...); // print w/ spaces
    }
}

using namespace output;

namespace io {
    void setIn(string s) { freopen(s.c_str(),"r",stdin); }
    void setOut(string s) { freopen(s.c_str(),"w",stdout); }
    void setIO(string s = "") {
        ios_base::sync_with_stdio(0); cin.tie(0); // fast I/O
        if (sz(s)) { setIn(s+".in"), setOut(s+".out"); } // for USACO
    }
}

using namespace io;

template<class T> T invGeneral(T a, T b) {
    a %= b; if (a == 0) return b == 1 ? 0 : -1;
    T x = invGeneral(b,a); 
    return x == -1 ? -1 : ((1-(ll)b*x)/a+b)%b;
}

template<class T> struct modular {
    T val; 
    explicit operator T() const { return val; }
    modular() { val = 0; }
    modular(const ll& v) { 
        val = (-MOD <= v && v <= MOD) ? v : v % MOD;
        if (val < 0) val += MOD;
    }
    
    // friend ostream& operator<<(ostream& os, const modular& a) { return os << a.val; }
    friend void pr(const modular& a) { pr(a.val); }
    friend void re(modular& a) { ll x; re(x); a = modular(x); }
   
    friend bool operator==(const modular& a, const modular& b) { return a.val == b.val; }
    friend bool operator!=(const modular& a, const modular& b) { return !(a == b); }
    friend bool operator<(const modular& a, const modular& b) { return a.val < b.val; }

    modular operator-() const { return modular(-val); }
    modular& operator+=(const modular& m) { if ((val += m.val) >= MOD) val -= MOD; return *this; }
    modular& operator-=(const modular& m) { if ((val -= m.val) < 0) val += MOD; return *this; }
    modular& operator*=(const modular& m) { val = (ll)val*m.val%MOD; return *this; }
    friend modular pow(modular a, ll p) {
        modular ans = 1; for (; p; p /= 2, a *= a) if (p&1) ans *= a;
        return ans;
    }
    friend modular inv(const modular& a) { 
        auto i = invGeneral(a.val,MOD); assert(i != -1);
        return i;
    } // equivalent to return exp(b,MOD-2) if MOD is prime
    modular& operator/=(const modular& m) { return (*this) *= inv(m); }
    
    friend modular operator+(modular a, const modular& b) { return a += b; }
    friend modular operator-(modular a, const modular& b) { return a -= b; }
    friend modular operator*(modular a, const modular& b) { return a *= b; }
    
    friend modular operator/(modular a, const modular& b) { return a /= b; }
};

typedef modular<int> mi;
typedef pair<mi,mi> pmi;
typedef vector<mi> vmi;
typedef vector<pmi> vpmi;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

template<class T, int SZ> struct RMQ {
    constexpr static int level(int x) { return 31-__builtin_clz(x); } // floor(log_2(x))
    int stor[SZ][level(SZ)+1];
    vector<T> v;
    
    int comb(int a, int b) { return v[a] == v[b] ? min(a,b) : (v[a] < v[b] ? a : b); } // index of minimum
    
    void init(const vector<T>& _v) {
        v = _v; F0R(i,sz(v)) stor[i][0] = i; 
        FOR(j,1,level(sz(v))+1) F0R(i,sz(v)-(1<<(j-1))) 
            stor[i][j] = comb(stor[i][j-1],stor[i+(1<<(j-1))][j-1]);
    }
    
    int index(int l, int r) { // get index of min element
        int x = level(r-l+1);
        return comb(stor[l][x],stor[r-(1<<x)+1][x]);
    }
    T query(int l, int r) { return v[index(l,r)]; }
};

template<class T, int SZ> struct RMQ2 {
    constexpr static int level(int x) { return 31-__builtin_clz(x); } // floor(log_2(x))
    int stor[SZ][level(SZ)+1];
    vector<T> v;
    
    int comb(int a, int b) { return v[a] == v[b] ? min(a,b) : (v[a] > v[b] ? a : b); } // index of minimum
    
    void init(const vector<T>& _v) {
        v = _v; F0R(i,sz(v)) stor[i][0] = i; 
        FOR(j,1,level(sz(v))+1) F0R(i,sz(v)-(1<<(j-1))) 
            stor[i][j] = comb(stor[i][j-1],stor[i+(1<<(j-1))][j-1]);
    }
    
    int index(int l, int r) { // get index of min element
        int x = level(r-l+1);
        return comb(stor[l][x],stor[r-(1<<x)+1][x]);
    }
    T query(int l, int r) { return v[index(l,r)]; }
};

RMQ<int,MX> A;
RMQ2<int,MX> B;
int N,M;
int pre[MX];
vi w;

int need(int l, int r) {
	if (pre[r] <= l) return 0;
	// ps("HUH",l,r,pre[r]-1,A.query(l,r),B.query(l,pre[r]-1));
	return A.query(l,r)+B.query(l,pre[r]-1);
}

int main() {
    setIO(); re(N,M); 
    w.rsz(N+1); FOR(i,1,N+1) re(w[i]);
    A.init(w), B.init(w);
    // ps("??",W);
    FOR(i,2,N+1) {
    	pre[i] = pre[i-1];
    	if (w[i-1] > w[i]) pre[i] = i;
    }
    F0R(i,M) {
    	int l,r,k; re(l,r,k);
    	if (need(l,r) <= k) ps(1);
    	else ps(0);
    }
}

/* stuff you should look for
    * int overflow, array bounds
    * special cases (n=1?), set tle
    * do smth instead of nothing and stay organized
*/

Compilation message

sortbooks.cpp: In function 'void io::setIn(std::__cxx11::string)':
sortbooks.cpp:113:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     void setIn(string s) { freopen(s.c_str(),"r",stdin); }
                            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp: In function 'void io::setOut(std::__cxx11::string)':
sortbooks.cpp:114:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     void setOut(string s) { freopen(s.c_str(),"w",stdout); }
                             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Incorrect	2 ms	380 KB	Output isn't correct
4	Halted	0 ms	0 KB	-

Subtask #2
0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Incorrect	2 ms	380 KB	Output isn't correct
4	Halted	0 ms	0 KB	-

Subtask #3
13.0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1466 ms	174608 KB	Output is correct
2	Correct	1484 ms	174680 KB	Output is correct
3	Correct	1479 ms	174712 KB	Output is correct
4	Correct	1464 ms	174712 KB	Output is correct
5	Correct	1251 ms	174636 KB	Output is correct