Submission #1094006

#	Time	Username	Problem	Language	Result	Execution time	Memory
1094006		KasymK	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	17 / 100	93 ms	26164 KiB

sortbooks

#include "bits/stdc++.h"
using namespace std;
#define ff first
#define ss second
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define tr(i, c) for(auto i = c.begin(); i != c.end(); ++i)
#define wr puts("----------------")
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const int N = 1e6+5;
int v[N], par[N];

// struct node{
//     int l, r, val;
// } seg[N<<2];

// void build(int x, int l, int r){
//     seg[x].l = l, seg[x].r = r;
//     if(l == r){
//         seg[x].val = (v[x] < v[x-1]);
//         return;
//     }
//     int mid = (l+r)>>1;
//     build(x<<1, l, mid);
//     build(x<<1|1, mid+1, r);
//     seg[x].val = seg[x<<1].val+seg[x<<1|1].val;
// }

// int query(int x, int l, int r){
//     if(seg[x].l == l and seg[x].r == r)
//         return seg[x].val;
//     int mid = (seg[x].l+seg[x].r)>>1;
//     if(r <= mid)
//         return query(x<<1, l, r);
//     else if(l > mid)
//         return query(x<<1|1, l, r);
//     else
//         return query(x<<1, l, mid)+query(x<<1|1, mid+1, r);
// }

int main(){
    int n, q;
    scanf("%d%d", &n, &q);
    for(int i = 1; i <= n; ++i){
        int x;
        scanf("%d", &x);
        v[i] = x;
    }
    if(n <= 5e3+5){
        vector<int> A;
        int l, r, k;
        auto wow = [&]() -> bool {
            int mx = -1, sz = (int)A.size();
            for(int i = 0; i < sz; ++i)
                for(int j = i-1; j >= 0; --j)
                    if(A[i] < A[j])
                        swap(A[i], A[j]), umax(mx, A[i]+A[j]);
                    else
                        break;
            return (mx <= k);
        };
        while(q--){
            scanf("%d%d%d", &l, &r, &k);
            for(int i = l; i <= r; ++i)
                A.pb(v[i]);
            // hazel eyes with green flecks ---> the only thing, that I enjoy of looking...
            bool ok = wow();
            puts(ok ? "1" : "0");
            A.clear();
        }
        return 0;
    }
    for(int i = 1; i <= n; ++i)
        par[i] = par[i-1]+(v[i]<v[i-1]);
    // build(1, 1, n);
    while(q--){
        int l, r, k;
        scanf("%d%d", &l, &r, &k);
        // we cannot do any swaps, we need to only check if interval [l: r] is sorted or not.
        // int ok = query(1, l, r);
        // puts(!ok ? "1" : "0");
        if(r-l == 0){
            puts("1");
            continue;
        }
        int ok = par[r]-par[l];
        puts(!ok ? "1" : "0");
    }
    return 0;
}

Compilation message (stderr)

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:83:15: warning: too many arguments for format [-Wformat-extra-args]
   83 |         scanf("%d%d", &l, &r, &k);
      |               ^~~~~~
sortbooks.cpp:48:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |     scanf("%d%d", &n, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~
sortbooks.cpp:51:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         scanf("%d", &x);
      |         ~~~~~^~~~~~~~~~
sortbooks.cpp:68:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   68 |             scanf("%d%d%d", &l, &r, &k);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:83:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   83 |         scanf("%d%d", &l, &r, &k);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23