oj.uz

Submission #153662

# Submission time Handle Problem Language Result Execution time Memory
153662 2019-09-15T05:55:21 Z semiauto Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++14
0 / 100
 3000 ms 225008 KB 
#include <bits/stdc++.h>
using namespace std;
int n,m,i,j,l,r,ans,N=1024*1024;
int mas[1000001],par[1000001],val[1000001],hey[3000001],tree[3000001];
pair <int,int> p[1000001][20];
vector <int> v[1000001];
void dfs(int u) {
    int i;
    p[u][0]={par[u],val[u]};
    for (i=1;i<20;i++)
        if (p[p[u][i-1].first][i-1].first)
            p[u][i]={p[p[u][i-1].first][i-1].first,max(p[u][i-1].second,p[p[u][i-1].first][i-1].second)};
    for (i=0;i<(v[u].size());i++)
        dfs(v[u][i]);
}
int solve(int x,int y,int p,int l,int r) {
    if (l>=y || x>=r)
        return 0;
    if (l>=x && r<=y)
        return tree[p];
    return max(solve(x,y,2*p,l,(l+r)/2),solve(x,y,2*p+1,(l+r)/2+1,r));
}
void build_tree(int p) {
    if (p>=N) {
        if ((p-N+1)<=n)
            tree[p]=mas[p-N+1];
        return;
    }
    build_tree(2*p);
    build_tree(2*p+1);
    tree[p]=max(tree[2*p],tree[2*p+1]);
}
int main() {
    cin>>n>>m;
    for (i=1;i<=n;i++)
        cin>>mas[i];
    build_tree(1);
    //return 0;
    for (i=n;i>0;i--) {
        for (;r>0;r--)
            if (mas[hey[r]]>=mas[i])
                break;
        par[i]=hey[r];
        v[hey[r]].push_back(i);
        hey[++r]=i;
    }
    for (i=1;i<=n;i++)
        if (par[i]>(i+1))
            val[i]=mas[i]+solve(i+1+N-1,par[i]-1+N-1,1,N,2*N-1);
    for (i=0;i<(v[0].size());i++)
        dfs(v[0][i]);
    while (cin>>l>>r>>m) {
        if (l==r) {
            cout<<"1"<<endl;
            continue;
        }
        ans=0;
        for (i=19;i>=0;i--)
            if (p[l][i].first && p[l][i].first<=r) {
                ans=max(ans,p[l][i].second);
                l=p[l][i].first;
            }
        if (r>l)
            ans=max(ans,mas[l]+solve(l+1+N-1,r+N-1,1,N,2*N-1));
        if (ans>m)
            cout<<"0"<<endl;
        else
            cout<<"1"<<endl;
    }
}

Compilation message

sortbooks.cpp: In function 'void dfs(int)':
sortbooks.cpp:13:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i=0;i<(v[u].size());i++)
              ~^~~~~~~~~~~~~~
sortbooks.cpp: In function 'int main()':
sortbooks.cpp:50:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i=0;i<(v[0].size());i++)
              ~^~~~~~~~~~~~~~

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 27896 KB Output is correct
2 Correct 34 ms 28024 KB Output is correct
3 Incorrect 36 ms 28024 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 27896 KB Output is correct
2 Correct 34 ms 28024 KB Output is correct
3 Incorrect 36 ms 28024 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3023 ms 225008 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 581 ms 46984 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 27896 KB Output is correct
2 Correct 34 ms 28024 KB Output is correct
3 Incorrect 36 ms 28024 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 27896 KB Output is correct
2 Correct 34 ms 28024 KB Output is correct
3 Incorrect 36 ms 28024 KB Output isn't correct
4 Halted 0 ms 0 KB -