Submission #579023

#	Time	Username	Problem	Language	Result	Execution time	Memory
579023		LucaIlie	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	0 / 100	2555 ms	178624 KiB

sortbooks

#include <bits/stdc++.h>
 
#define MAX_N 1000000
 
using namespace std;
 
int w[MAX_N];
 
int lower( vector <int> &v, int x ) {
    int l, r, mid;
 
    l = 0;
    r = v.size();
    while ( r - l > 1 ) {
        mid = (l + r) / 2;
 
        if ( v[mid] < x )
            l = mid;
        else
            r = mid;
    }
 
    return v[l] < x ? v[l] : -x;
}
 
 
struct AINT {
    struct nod {
        int maxEffort, maxW;
        vector <int> v;
    };
 
    struct answer {
        int maxEfort, maxW;
    };
 
    nod aint[4 * MAX_N];
    answer ans;
 
    void init( int nod, int l, int r ) {
        int mid, i, j;
 
        if ( l == r ) {
            aint[nod].maxEffort = 0;
            aint[nod].maxW = w[l];
            aint[nod].v.push_back( w[l] );
            return;
        }
 
        mid = (l + r) / 2;
        init( nod * 2 + 1, l, mid );
        init( nod * 2 + 2, mid + 1, r );
 
        aint[nod].maxW = max( aint[nod * 2 + 1].maxW, aint[nod * 2 + 2].maxW );
        aint[nod].maxEffort = max( max( aint[nod * 2 + 1].maxEffort, aint[nod * 2 + 2].maxEffort ), aint[nod * 2 + 1].maxW + lower( aint[nod * 2 + 2].v, aint[nod * 2 + 1].maxW ) );
 
        i = j = 0;
        while ( i < aint[nod * 2 + 1].v.size() && j < aint[nod * 2 + 2].v.size() ) {
            if ( aint[nod * 2 + 1].v[i] < aint[nod * 2 + 2].v[j] ) {
                aint[nod].v.push_back( aint[nod * 2 + 1].v[i] );
                i++;
            } else {
                aint[nod].v.push_back( aint[nod * 2 + 2].v[j] );
                j++;
            }
        }
        while ( i < aint[nod * 2 + 1].v.size() ) {
            aint[nod].v.push_back( aint[nod * 2 + 1].v[i] );
            i++;
        }
        while ( j < aint[nod * 2 + 2].v.size() ) {
            aint[nod].v.push_back( aint[nod * 2 + 2].v[j] );
            j++;
        }
    }
 
    void query( int nod, int l, int r, int lq, int rq ) {
        int mid;
 
        if ( nod == 0 )
            ans = { 0, 0 };
 
        if ( l > rq || r < lq )
            return;
 
        if ( lq <= l && r <= rq ) {
            ans.maxEfort = max( max( ans.maxEfort, aint[nod].maxEffort ), ans.maxW + lower( aint[nod].v, ans.maxW ) );
            ans.maxW = max( ans.maxW, aint[nod].maxW );
            return;
        }
 
        mid = (l + r) / 2;
        query( nod * 2 + 1, l, mid, lq, rq );
        query( nod * 2 + 2, mid + 1, r, lq, rq );
    }
};
 
AINT shelf;
 
signed main() {
    int n, m, l, r, k, i;
 
    cin >> n >> m;
  n /= 3;
    for ( i = 0; i < n; i++ )
        cin >> w[i];
 
    shelf.init( 0, 0, n - 1 );
 
    for ( i = 0; i < m; i++ ) {
        cin >> l >> r >> k;
 
        shelf.query( 0, 0, n - 1, l - 1, r - 1 );
 
        if ( shelf.ans.maxEfort > k )
            cout << "0\n";
        else
            cout << "1\n";
    }
 
    return 0;
}

Compilation message (stderr)

sortbooks.cpp: In member function 'void AINT::init(int, int, int)':
sortbooks.cpp:58:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |         while ( i < aint[nod * 2 + 1].v.size() && j < aint[nod * 2 + 2].v.size() ) {
      |                 ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:58:53: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |         while ( i < aint[nod * 2 + 1].v.size() && j < aint[nod * 2 + 2].v.size() ) {
      |                                                   ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:67:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |         while ( i < aint[nod * 2 + 1].v.size() ) {
      |                 ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:71:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |         while ( j < aint[nod * 2 + 2].v.size() ) {
      |                 ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

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