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답안 #890851

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
890851 2023-12-22T04:16:08 Z vjudge1 Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++17
64 / 100
 1384 ms 134008 KB 
#include "bits/stdc++.h"
using namespace std;       

// #pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")

using ll = long long;
using ld = long double;
#define pb push_back
#define ff first
#define ss second
#define sz(x) (ll)(x).size()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()

void freopen(string s) { freopen((s+".in").c_str(), "r", stdin); freopen((s+".out").c_str(), "w", stdout); }
void IOIGold2024_InshAllah() { ios_base::sync_with_stdio(false); cin.tie(NULL); }
ll binmul(ll a, ll b, ll c) { ll res = 0; while(b) { if(b&1) (res += a) %= c; (a += a) %= c; b >>= 1; } return res; }
ll binpow(ll a, ll b, ll c) { ll res = 1; while(b) { if(b&1) (res *= a) %= c; (a *= a) %= c; b >>= 1; } return res; }
template<typename T> T gcd(T a, T b) { if(b==0) return a; return gcd(b, a%b); }
template<typename T> T lcm(T a, T b) { return a/gcd(a, b)*b; }
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ld rnd() { return rng()%INT_MAX*1.0/INT_MAX; }

const ll inf = 1e18+7, MX = LLONG_MAX, MN = LLONG_MIN;
const ll mod = 1e9+7, N = 1e6+5;
#define ll int
struct sn { ll l, r, k; } b[N];
ll a[N], t[N][20], lg[N], res[N], bsz, c[N];
vector<ll> g[N];

ll get(ll l, ll r) {
    if(l>r) return 0;
    ll k = lg[r-l+1];
    return max(t[l][k], t[r-(1<<k)+1][k]);
}

void kigash() {
    ll n, q;
    cin>>n>>q, bsz = min(n, 800);
    ll mx = 0, mn = -1;
    for(ll i=1; i<=n; i++) {
        if(i>1) lg[i] = lg[i/2]+1;
        cin>>a[i], t[i][0] = a[i];
        if(i==1) mn = a[i];
        mn = min(mn, a[i]);
        if(a[i]<mx) res[(i+bsz-1)/bsz] = max(res[(i+bsz-1)/bsz], a[i]+mx);
        mx = max(mx, a[i]);
        g[(i+bsz-1)/bsz].pb(a[i]);
        if(i%bsz==0) mx = 0;
    }
    for(ll i=1; i<=n; i++) sort(all(g[i]));
    for(ll j=1; j<20; j++) {
        for(ll i=1; i+(1<<j)-1<=n; i++) {
            t[i][j] = max(t[i][j-1], t[i+(1<<(j-1))][j-1]);
        }
    }
    ll mxk = 0;
    for(ll i=1; i<=q; i++) {
        cin>>b[i].l>>b[i].r>>b[i].k;
        mxk = max(mxk, b[i].k);
    }
    if(mxk<mn) {
        set<pair<ll, ll>> st;
        ll l = 1;
        for(ll i=1; i<=n; i++) {
            if(a[i]<a[i-1]) {
                c[l] = i;
                l = i;
            }
        }
        c[l] = n;
        for(ll i=1; i<=q; i++) {
            ll l = b[i].l, r = b[i].r, k = b[i].k;
            if(c[l]>=r) cout<<"1\n";
            else cout<<"0\n";
        }
        return;
    }
    for(ll j=1; j<=q; j++) {
        ll l, r, k, f = 0, mx = 0, i;
        l = b[j].l, r = b[j].r, k = b[j].k, i = l;
        for(i=l; i<=r && (i+bsz-1)/bsz==(l+bsz-1)/bsz; i++) {
            if(a[i]<mx) f = max(f, a[i]+mx);
            mx = max(mx, a[i]);
        }
        for(; i<=r && (i+bsz-1)/bsz!=(r+bsz-1)/bsz; i += bsz) {
            f = max(f, res[(i+bsz-1)/bsz]);
            mx = get(l, i-1);
            ll pos = lower_bound(all(g[(i+bsz-1)/bsz]), mx)-g[(i+bsz-1)/bsz].begin()-1;
            if(pos>-1) f = max(f, mx+g[(i+bsz-1)/bsz][pos]);
        }
        mx = get(l, i-1);
        for(; i<=r; i++) {
            if(a[i]<mx) f = max(f, a[i]+mx);
            mx = max(mx, a[i]);
        }
        cout<<(f>k ? 0 : 1)<<"\n";
    }
    return;
}

signed main(/*Kigash Amir*/) {
    // freopen("");
    IOIGold2024_InshAllah();
    ll tt = 1;
    // cin>>tt;
    for(ll i=1; i<=tt; i++) {
        kigash();
    }
}

Compilation message

sortbooks.cpp: In function 'void kigash()':
sortbooks.cpp:75:40: warning: unused variable 'k' [-Wunused-variable]
   75 |             ll l = b[i].l, r = b[i].r, k = b[i].k;
      |                                        ^
sortbooks.cpp: In function 'void freopen(std::string)':
sortbooks.cpp:17:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 | void freopen(string s) { freopen((s+".in").c_str(), "r", stdin); freopen((s+".out").c_str(), "w", stdout); }
      |                          ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:17:73: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 | void freopen(string s) { freopen((s+".in").c_str(), "r", stdin); freopen((s+".out").c_str(), "w", stdout); }
      |                                                                  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 33368 KB Output is correct
2 Correct 6 ms 33372 KB Output is correct
3 Correct 6 ms 33372 KB Output is correct
4 Correct 6 ms 33408 KB Output is correct
5 Correct 6 ms 33372 KB Output is correct
6 Correct 7 ms 33372 KB Output is correct
7 Correct 7 ms 33372 KB Output is correct
8 Correct 7 ms 33372 KB Output is correct
9 Correct 7 ms 33424 KB Output is correct
10 Correct 7 ms 33484 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 33368 KB Output is correct
2 Correct 6 ms 33372 KB Output is correct
3 Correct 6 ms 33372 KB Output is correct
4 Correct 6 ms 33408 KB Output is correct
5 Correct 6 ms 33372 KB Output is correct
6 Correct 7 ms 33372 KB Output is correct
7 Correct 7 ms 33372 KB Output is correct
8 Correct 7 ms 33372 KB Output is correct
9 Correct 7 ms 33424 KB Output is correct
10 Correct 7 ms 33484 KB Output is correct
11 Correct 12 ms 33368 KB Output is correct
12 Correct 13 ms 33372 KB Output is correct
13 Correct 16 ms 33368 KB Output is correct
14 Correct 18 ms 33372 KB Output is correct
15 Correct 18 ms 33372 KB Output is correct
16 Correct 20 ms 33372 KB Output is correct
17 Correct 21 ms 33396 KB Output is correct
18 Correct 21 ms 33420 KB Output is correct

Subtask #3
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 448 ms 134008 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 352 ms 41052 KB Output is correct
2 Correct 445 ms 40512 KB Output is correct
3 Correct 359 ms 40676 KB Output is correct
4 Correct 368 ms 40532 KB Output is correct
5 Correct 316 ms 40948 KB Output is correct
6 Correct 432 ms 40632 KB Output is correct
7 Correct 435 ms 40624 KB Output is correct
8 Correct 454 ms 40532 KB Output is correct
9 Correct 166 ms 33872 KB Output is correct
10 Correct 455 ms 40528 KB Output is correct

Subtask #5
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 33368 KB Output is correct
2 Correct 6 ms 33372 KB Output is correct
3 Correct 6 ms 33372 KB Output is correct
4 Correct 6 ms 33408 KB Output is correct
5 Correct 6 ms 33372 KB Output is correct
6 Correct 7 ms 33372 KB Output is correct
7 Correct 7 ms 33372 KB Output is correct
8 Correct 7 ms 33372 KB Output is correct
9 Correct 7 ms 33424 KB Output is correct
10 Correct 7 ms 33484 KB Output is correct
11 Correct 12 ms 33368 KB Output is correct
12 Correct 13 ms 33372 KB Output is correct
13 Correct 16 ms 33368 KB Output is correct
14 Correct 18 ms 33372 KB Output is correct
15 Correct 18 ms 33372 KB Output is correct
16 Correct 20 ms 33372 KB Output is correct
17 Correct 21 ms 33396 KB Output is correct
18 Correct 21 ms 33420 KB Output is correct
19 Correct 880 ms 52024 KB Output is correct
20 Correct 854 ms 51916 KB Output is correct
21 Correct 1364 ms 52060 KB Output is correct
22 Correct 1384 ms 52268 KB Output is correct
23 Correct 1341 ms 51952 KB Output is correct
24 Correct 1180 ms 51936 KB Output is correct
25 Correct 1154 ms 52488 KB Output is correct
26 Correct 1140 ms 52064 KB Output is correct
27 Correct 1085 ms 52040 KB Output is correct
28 Correct 1018 ms 52060 KB Output is correct
29 Correct 765 ms 51920 KB Output is correct
30 Correct 767 ms 52024 KB Output is correct
31 Correct 803 ms 52232 KB Output is correct
32 Correct 819 ms 52052 KB Output is correct
33 Correct 802 ms 51976 KB Output is correct
34 Correct 1214 ms 51992 KB Output is correct
35 Correct 1295 ms 52428 KB Output is correct
36 Correct 1220 ms 52056 KB Output is correct
37 Correct 1242 ms 52044 KB Output is correct
38 Correct 1300 ms 52164 KB Output is correct
39 Correct 1179 ms 51932 KB Output is correct
40 Correct 971 ms 47260 KB Output is correct
41 Correct 1241 ms 52108 KB Output is correct

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 33368 KB Output is correct
2 Correct 6 ms 33372 KB Output is correct
3 Correct 6 ms 33372 KB Output is correct
4 Correct 6 ms 33408 KB Output is correct
5 Correct 6 ms 33372 KB Output is correct
6 Correct 7 ms 33372 KB Output is correct
7 Correct 7 ms 33372 KB Output is correct
8 Correct 7 ms 33372 KB Output is correct
9 Correct 7 ms 33424 KB Output is correct
10 Correct 7 ms 33484 KB Output is correct
11 Correct 12 ms 33368 KB Output is correct
12 Correct 13 ms 33372 KB Output is correct
13 Correct 16 ms 33368 KB Output is correct
14 Correct 18 ms 33372 KB Output is correct
15 Correct 18 ms 33372 KB Output is correct
16 Correct 20 ms 33372 KB Output is correct
17 Correct 21 ms 33396 KB Output is correct
18 Correct 21 ms 33420 KB Output is correct
19 Incorrect 448 ms 134008 KB Output isn't correct
20 Halted 0 ms 0 KB -