oj.uz

Submission #199912

# Submission time Handle Problem Language Result Execution time Memory
199912 2020-02-04T01:26:57 Z mdn2002 San (COCI17_san) C++14
0 / 120
 644 ms 65536 KB 
#include<bits/stdc++.h>
using namespace std;
const int mod=1e9+7;
int n,k,a[44],b[44],nm;
long long tree[2500006],ans;
vector<pair<int,int> >on,to;
vector<int>vt,tk;
map<long long,int>mp;
void up(int nod,int l,int r,int x)
{
    if(x<l||r<x)return;
    if(l==r)
    {
        tree[nod]++;
        return;
    }
    int mid=(l+r)/2;
    up(nod*2,l,mid,x);
    up(nod*2+1,mid+1,r,x);
    tree[nod]=tree[nod*2]+tree[nod*2+1];
}
int qr(int nod,int l,int r,int x,int y)
{
    if(x<=l&&r<=y)return tree[nod];
    if(y<l||r<x)return 0;
    int mid=(l+r)/2;
    return qr(nod*2,l,mid,x,y)+qr(nod*2+1,mid+1,r,x,y);
}
void bt(int x,int mx,long long sum)
{
    if(sum>=k)ans++;
    if(sum>0)
    {
        if(mx==n/2)on.push_back({a[x],sum});
        else
        {
            to.push_back({a[x],sum});
            tk.push_back(sum);
        }
        vt.push_back(sum);
    }
    if(x==mx+1)return;
    for(int i=x+1;i<=mx;i++)
    {
        if(sum==0)bt(i,mx,b[i]);
        else
        {
            if(a[x]<=a[i])bt(i,mx,sum+b[i]);
        }
    }
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    //freopen("gpsduel.in","r",stdin);
    //freopen("gpsduel.out","w",stdout);
    cin>>n>>k;
    for(int i=1;i<=n;i++)cin>>a[i]>>b[i];
    bt(0,n/2,0);
    bt(n/2,n,0);
    sort(on.begin(),on.end());
    sort(to.begin(),to.end());
    sort(vt.begin(),vt.end());
    sort(tk.begin(),tk.end());
    for(int i=0;i<vt.size();i++)
    {
        if(mp[vt[i]]==0)mp[vt[i]]=++nm;
    }
    int l=to.size()-1;
    for(int i=on.size()-1;i>=0;i--)
    {
        int x=on[i].first,y=on[i].second;
        if(l!=-1)
        {
            while(to[l].first>=x)
            {
                int sm=to[l].second;
                up(1,0,(1<<20)+45,mp[sm]);
                l--;
            }
        }
        int kk=*lower_bound(tk.begin(),tk.end(),k-y);
        if(mp[kk])ans+=qr(1,0,(1<<20)+45,mp[kk],(1<<20)+45);
    }
    cout<<ans;
}

Compilation message

san.cpp: In function 'int main()':
san.cpp:67:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<vt.size();i++)
                 ~^~~~~~~~~~

Subtask #1
0 / 24.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 504 KB Output is correct
2 Incorrect 5 ms 376 KB Output isn't correct

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Incorrect 114 ms 9580 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Incorrect 177 ms 16872 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 24.0

# Verdict Execution time Memory Grader output
1 Runtime error 644 ms 65536 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -