oj.uz

Submission #1107790

# Submission time Handle Problem Language Result Execution time Memory
1107790 2024-11-02T05:44:03 Z Aviansh Horses (IOI15_horses) C++17
54 / 100
 1500 ms 32500 KB 
#include "horses.h"
#include <bits/stdc++.h>
using namespace std;

int n;
int *x;
int *y;
int mod = 1e9+7;

template <class T> class segTree{
    private:
        int n;
        T *st;
    public:
        void realMakeST(int *arr, int l, int r, int ind){
            if(l==r){
                st[ind]=arr[l];
            }
            else{
                int mid = (l+r)/2;
                realMakeST(arr,l,mid,ind*2+1);
                realMakeST(arr,mid+1,r,ind*2+2);
                st[ind]=st[ind*2+1]*st[ind*2+2];
                st[ind]%=mod;
            }
        }
        segTree(){
            //aise hi
        }
        segTree(int *arr, int siz){
            int x = (int)pow(2,ceil(log2(siz)));
            n=siz-1;
            x*=2;
            st=new T[x];
            realMakeST(arr,0,n,0);
        }
        void realUpdate(int l, int r, int ind, int pos, int val){
            if(pos<l||pos>r){
                return;
            }
            if(l==r){
                st[ind]=val;
                return;
            }
            int mid = (l+r)/2;
            realUpdate(l,mid,2*ind+1,pos,val);
            realUpdate(mid+1,r,2*ind+2,pos,val);
            st[ind]=st[ind*2+1]*st[ind*2+2];
            st[ind]%=mod;
        }
        void update(int ind, int val){
            realUpdate(0,n,0,ind,val);
        }

        T realQuery(int l, int r, int s, int e, int ind){
            if(e<l||s>r){
                return 1;
            }
            if(s<=l&&r<=e){
                return st[ind];
            }
            int mid = (l+r)/2;
            return (realQuery(l,mid,s,e,2*ind+1)*realQuery(mid+1,r,s,e,2*ind+2))%mod;
        }

        T query(int s,int e){
            return realQuery(0,n,s,e,0);
        }
};


template <class T> class segTreeMax{
    private:
        int n;
        T *st;
    public:
        void realMakeST(int *arr, int l, int r, int ind){
            if(l==r){
                st[ind]=arr[l];
            }
            else{
                int mid = (l+r)/2;
                realMakeST(arr,l,mid,ind*2+1);
                realMakeST(arr,mid+1,r,ind*2+2);
                st[ind]=max(st[ind*2+1],st[ind*2+2]);
                st[ind]%=mod;
            }
        }
        segTreeMax(){
            //aise hi
        }
        segTreeMax(int *arr, int siz){
            int x = (int)pow(2,ceil(log2(siz)));
            n=siz-1;
            x*=2;
            st=new T[x];
            realMakeST(arr,0,n,0);
        }
        void realUpdate(int l, int r, int ind, int pos, int val){
            if(pos<l||pos>r){
                return;
            }
            if(l==r){
                st[ind]=val;
                return;
            }
            int mid = (l+r)/2;
            realUpdate(l,mid,2*ind+1,pos,val);
            realUpdate(mid+1,r,2*ind+2,pos,val);
            st[ind]=max(st[ind*2+1],st[ind*2+2]);
            st[ind]%=mod;
        }
        void update(int ind, int val){
            realUpdate(0,n,0,ind,val);
        }

        T realQuery(int l, int r, int s, int e, int ind){
            if(e<l||s>r){
                return 1;
            }
            if(s<=l&&r<=e){
                return st[ind];
            }
            int mid = (l+r)/2;
            return max(realQuery(l,mid,s,e,2*ind+1),realQuery(mid+1,r,s,e,2*ind+2));
        }

        T query(int s,int e){
            return realQuery(0,n,s,e,0);
        }
};

int t = 1;
int *temp = &t;

segTree<long long> st(temp,1);
segTreeMax<long long> stmax(temp,1);
set<pair<int,int>>ones;

int finans(){
    int mx = n-1;
    long long curr = 1;
    int mxy = y[n-1];
    //cout << "here1" << endl;
    set<pair<int,int>>::iterator it = ones.end();
    //cout << "here2" << endl;
    //cout << "ones.size: " << ones.size() << endl;
    bool over = (ones.size()==0);
    if(!over)
        --it;
    for(int i = n-1;i>=0;i--){
        if(!over&&i==(*it).second){
            i=(*it).first;
            int cury = 0;
            if((*it).second-(*it).first<=15){
                for(int i = (*it).first;i<=(*it).second;i++){
                    cury=max(cury,y[i]);
                }
            }
            else{
                cury = stmax.query((*it).first,(*it).second);
            }
            if(cury>curr){
                mx=i;
                curr=cury;
                mxy=cury;
            }
            if(it==ones.begin()){
                over=1;
            }
            it--;
            if(curr>=1e9){
                break;
            }
            continue;
        }
        if(y[i]>curr){
            mx=i;
            curr=y[i];
            mxy=y[i];
        }
        curr*=x[i];
        //cout << i << endl;
        assert(x[i]!=1);
        if(curr>=1e9){
            break;
        }
    }
    //cout << "returning: " << (1LL*st.query(0,mx)*mxy)%mod << endl;
    return (1LL*st.query(0,mx)*mxy)%mod;
}

int init(int N, int X[], int Y[]) {
    x=X;
    y=Y;
    n=N;
    st = segTree<long long>(x,n);
    stmax = segTreeMax<long long>(y,n);
    pair<int,int>rg={-1,-1};
    for(int i = 0;i<n;i++){
        if(x[i]==1){
            if(rg.first==-1){
                rg.first=i;
                rg.second=i;
            }
            else{
                rg.second=i;
            }
        }
        else {
            if(rg.first!=-1)
                ones.insert(rg);
            rg={-1,-1};
        }
    }
    if(rg.first!=-1){
        ones.insert(rg);
    }
    //cout << "here" << endl;
    for(pair<int,int>p:ones){
        //cout << p.first << " " << p.second << endl;
    }
    return finans();
}

int updateX(int pos, int val) {
    if(x[pos]==1&&val!=1){
        set<pair<int,int>>::iterator it = ones.upper_bound({pos,2e9});
        pair<int,int>p = *(--it);
        ones.erase(p);
        if(p.first!=pos){
            ones.insert({p.first,pos-1});
        }
        if(p.second!=pos){
            ones.insert({pos+1,p.second});
        }
    }
    else if(x[pos]!=1&&val==1){
        if(ones.size()==0){
            ones.insert({pos,pos});
        }
        else{
            set<pair<int,int>>::iterator it = ones.upper_bound({pos,2e9});
            pair<int,int>p={0,0};
            if(it!=ones.begin()){
                p = *(--it);
                if(p.second==pos-1){
                    ones.erase(p);
                    ones.insert({p.first,pos});
                }
                else{
                    ones.insert({pos,pos});
                }
            }
            else{
                ones.insert({pos,pos});
            }
            it=ones.upper_bound({pos,2e9});
            if(it!=ones.end()){
                p=*(it);
                if(p.first==pos+1){
                    pair<int,int>p2=*(--it);
                    ones.erase(p);
                    ones.erase(p2);
                    ones.insert({p2.first,p.second});
                }
            }
        }
    }
    int las = -10;
    for(pair<int,int>p:ones){
        assert(p.first-las>1);
        las=p.second;
    }
    x[pos]=val;
    st.update(pos,val);
    //cout << "updated: " << endl;
    for(pair<int,int>p:ones){
        //cout << p.first << " " << p.second << endl;
    }
	return finans();
}

int updateY(int pos, int val) {
    y[pos]=val;
    stmax.update(pos,val);
	return finans();
}

Compilation message

horses.cpp: In constructor 'segTree<T>::segTree(int*, int)':
horses.cpp:31:17: warning: declaration of 'x' shadows a global declaration [-Wshadow]
   31 |             int x = (int)pow(2,ceil(log2(siz)));
      |                 ^
horses.cpp:6:6: note: shadowed declaration is here
    6 | int *x;
      |      ^
horses.cpp: In constructor 'segTreeMax<T>::segTreeMax(int*, int)':
horses.cpp:93:17: warning: declaration of 'x' shadows a global declaration [-Wshadow]
   93 |             int x = (int)pow(2,ceil(log2(siz)));
      |                 ^
horses.cpp:6:6: note: shadowed declaration is here
    6 | int *x;
      |      ^
horses.cpp: In function 'int finans()':
horses.cpp:156:25: warning: declaration of 'i' shadows a previous local [-Wshadow]
  156 |                 for(int i = (*it).first;i<=(*it).second;i++){
      |                         ^
horses.cpp:151:13: note: shadowed declaration is here
  151 |     for(int i = n-1;i>=0;i--){
      |             ^
horses.cpp:161:35: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  161 |                 cury = stmax.query((*it).first,(*it).second);
      |                        ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
horses.cpp:172:16: warning: conversion from 'long long int' to 'double' may change value [-Wconversion]
  172 |             if(curr>=1e9){
      |                ^~~~
horses.cpp:185:12: warning: conversion from 'long long int' to 'double' may change value [-Wconversion]
  185 |         if(curr>=1e9){
      |            ^~~~
horses.cpp:190:36: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  190 |     return (1LL*st.query(0,mx)*mxy)%mod;
      |            ~~~~~~~~~~~~~~~~~~~~~~~~^~~~
horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:220:22: warning: variable 'p' set but not used [-Wunused-but-set-variable]
  220 |     for(pair<int,int>p:ones){
      |                      ^
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:278:22: warning: variable 'p' set but not used [-Wunused-but-set-variable]
  278 |     for(pair<int,int>p:ones){
      |                      ^

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 504 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 592 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 504 KB Output is correct
20 Correct 1 ms 336 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 500 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 508 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 560 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 3 ms 336 KB Output is correct
28 Correct 3 ms 336 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 2 ms 336 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Correct 2 ms 348 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 64 ms 21576 KB Output is correct
2 Correct 86 ms 21700 KB Output is correct
3 Correct 54 ms 21576 KB Output is correct
4 Correct 73 ms 21576 KB Output is correct

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 0 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 504 KB Output is correct
19 Correct 1 ms 368 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 0 ms 336 KB Output is correct
22 Correct 1 ms 508 KB Output is correct
23 Correct 2 ms 336 KB Output is correct
24 Correct 2 ms 336 KB Output is correct
25 Correct 1 ms 480 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 3 ms 508 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 396 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 69 ms 20756 KB Output is correct
34 Correct 64 ms 20808 KB Output is correct
35 Correct 54 ms 20648 KB Output is correct
36 Correct 53 ms 20632 KB Output is correct
37 Correct 82 ms 20828 KB Output is correct
38 Execution timed out 1576 ms 32500 KB Time limit exceeded
39 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 0 ms 336 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 560 KB Output is correct
17 Correct 1 ms 504 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 0 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 2 ms 336 KB Output is correct
25 Correct 2 ms 336 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 2 ms 336 KB Output is correct
28 Correct 2 ms 348 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 428 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 64 ms 21648 KB Output is correct
34 Correct 88 ms 21576 KB Output is correct
35 Correct 64 ms 21532 KB Output is correct
36 Correct 70 ms 21840 KB Output is correct
37 Correct 66 ms 20808 KB Output is correct
38 Correct 64 ms 20948 KB Output is correct
39 Correct 56 ms 20808 KB Output is correct
40 Correct 51 ms 20808 KB Output is correct
41 Correct 79 ms 20916 KB Output is correct
42 Execution timed out 1570 ms 32500 KB Time limit exceeded
43 Halted 0 ms 0 KB -