Submission #343459

#	Time	Username	Problem	Language	Result	Execution time	Memory
343459		iliccmarko	Watering can (POI13_kon)	C++14	0 / 100	84 ms	33772 KiB

kon

#include <bits/stdc++.h>
//#include "koninc.h"
using namespace std;
#define ll long long
#define endl "\n"
#define INF 1000000000
#define LINF 1000000000000000LL
#define pb push_back
#define all(x) x.begin(), x.end()
#define len(s) (int)s.size()
#define test_case { int t; cin>>t; while(t--)solve(); }
#define single_case solve();
#define line cerr<<"----------"<<endl;
#define ios { ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); cerr.tie(NULL); }
#define mod 1000000007LL
const int N = 3e5 + 50;
vector<int> sum(4*N), maks(4*N);
vector<int> a(N);
int d;
vector<int> lazy(4*N);
int n;

int buildsum(int node, int l, int r)
{
    if(l==r)
    {
        return sum[node] = (a[l]>=d)?1:0;
    }
    int mid = (l+r)/2;
    return sum[node] = buildsum(node*2+1, l, mid) + buildsum(node*2+2, mid+1, r);
}

int buildmaks(int node, int l, int r)
{
    if(l==r)
    {
        if(a[l]>=d) maks[node] = -N;
        else maks[node] = a[l];
        return maks[node];
    }
    int mid = (l+r)/2;
    maks[node] = max(buildmaks(node*2+1, l, mid), buildmaks(node*2+2, mid+1, r));
}

void updatemaks(int node, int l, int r, int i, int j)
{
    if(i>j) return;
    int mid = (i+j)/2;
    if(lazy[node])
    {
        if(i!=j)
        {
            lazy[node*2+1] += lazy[node];
            lazy[node*2+2] += lazy[node];
        }
        maks[node] += lazy[node];
        lazy[node] = 0;
    }
    if(i>r||j<l) return;
    if(i>=l&&j<=r)
    {
        maks[node]++;
        if(i!=j)
        {
            lazy[node*2+1]++;
            lazy[node*2+2]++;
        }
        return;
    }
    updatemaks(node*2+1, l, r, i, mid);
    updatemaks(node*2+2, l, r, mid+1, j);
    maks[node] = max(maks[node*2+1], maks[node*2+2]);
}

void updatesum(int node, int l, int r, int x)
{
    if(l>r) return;
    if(l==r)
    {
        sum[node] = 1;
        return;
    }
    int mid = (l+r)/2;
    if(x>mid) updatesum(node*2+2, mid+1, r, x);
    else updatesum(node*2+1, l, mid, x);
    sum[node] = sum[node*2+1] + sum[node*2+2];
}

int get_sum(int node, int l, int r, int i, int j)
{
    if(i>j) return 0;
    if(i>r||j<l) return 0;
    if(i>=l&&j<=r) return sum[node];
    int mid = (i+j)/2;
    return get_sum(node*2+1, l, r, i, mid) + get_sum(node*2+2, l, r, mid+1, j);
}

void trazi(int node, int l, int r)
{
    if(l>r) return;
    int mid = (l+r)/2;
    if(lazy[node])
    {
        if(l!=r)
        {
            lazy[node*2+1] += lazy[node];
            lazy[node*2+2] += lazy[node];
        }
        maks[node] += lazy[node];
        lazy[node] = 0;
    }
    if(maks[node]<d) return;
    if(l==r)
    {
        updatesum(0, 0, n-1, l);
        maks[node] = -N;
        return;
    }
    //int mid = (l+r)/2;
    trazi(node*2+1, l, mid);
    trazi(node*2+2, mid+1, r);
    maks[node] = max(maks[node*2+1], maks[node*2+2]);
}

void inicjuj(int w, int k, int *D)
{
    n = w;
    d = k;
    for(int i = 0;i<n;i++) a[i] = D[i];
    buildmaks(0, 0, n-1);
    buildsum(0, 0, n-1);
}

void podlej(int a, int b)
{
    updatemaks(0, a, b, 0, n-1);
}

int dojrzale(int a, int b)
{
    trazi(0, 0, n-1);
    return get_sum(0, a, b, 0, n-1);
}

Compilation message (stderr)

kon.cpp: In function 'int buildmaks(int, int, int)':
kon.cpp:42:60: warning: control reaches end of non-void function [-Wreturn-type]
   42 |     maks[node] = max(buildmaks(node*2+1, l, mid), buildmaks(node*2+2, mid+1, r));
      |                                                   ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
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• Subtask 9: 0 / 10
• Subtask 10: 0 / 10