oj.uz

답안 #1103671

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1103671 2024-10-21T14:05:53 Z Pioneer 말 (IOI15_horses) C++17
34 / 100
 1500 ms 54688 KB 
#include "horses.h"
#include <bits/stdc++.h>

#define ll long long
using namespace std;

const ll inf=1e9;
const int mod=1e9+7;
const int MAX=5e6+10;

int x[MAX];
int y[MAX];

struct segtree{
	pair<int,bool> t[4*MAX];

	pair<int,bool> mrg(pair<int,bool> a,pair<int,bool> b){
		pair<int,bool> res={(int)(a.first*1ll*b.first%mod),(a.second|b.second)};
		if(a.first*1ll*b.first>=mod){
			res.second=1;
		}
		return res;
	}

	void build(int v,int tl,int tr){
		if(tl==tr){
			t[v]={x[tl],0};
			return;
		}
		int tm=(tl+tr)/2;
		build(2*v,tl,tm);
		build(2*v+1,tm+1,tr);
		t[v]=mrg(t[2*v],t[2*v+1]);
	}

	void update(int v,int tl,int tr,int pos,int x){
		if(tl==tr){
			t[v]={x,0};
			return;
		}
		int tm=(tl+tr)/2;
		if(pos<=tm)update(2*v,tl,tm,pos,x);
		else update(2*v+1,tm+1,tr,pos,x);
		t[v]=mrg(t[2*v],t[2*v+1]);
	}


	pair<int,bool> get(int v,int tl,int tr,int l,int r){
		if(l>r||tl>r||l>tr)return {1,0};
		if(l<=tl&&tr<=r)return t[v];
		int tm=(tl+tr)/2;
		return mrg(get(2*v,tl,tm,l,r),get(2*v+1,tm+1,tr,l,r));
	}
}tx;


struct segtreeMx{
	pair<int,int> t[MAX];

	pair<int,int> mrg(pair<int,int> a,pair<int,int> b){
		if(a.first>=b.first)return a;
		else return b;
	}

	void build(int v,int tl,int tr){
		if(tl==tr){
			t[v]={y[tl],tl};
			return;
		}
		int tm=(tl+tr)/2;
		build(2*v,tl,tm);
		build(2*v+1,tm+1,tr);
		t[v]=mrg(t[2*v],t[2*v+1]);
	}

	void update(int v,int tl,int tr,int pos,int x){
		if(tl==tr){
			t[v]={x,tl};
			return;
		}
		int tm=(tl+tr)/2;
		if(pos<=tm)update(2*v,tl,tm,pos,x);
		else update(2*v+1,tm+1,tr,pos,x);
		t[v]=mrg(t[2*v],t[2*v+1]);
	}

	pair<int,int> get(int v,int tl,int tr,int l,int r){
		if(l>r||tl>r||l>tr)return {0,0};
		if(l<=tl&&tr<=r)return t[v];
		int tm=(tl+tr)/2;
		return mrg(get(2*v,tl,tm,l,r),get(2*v+1,tm+1,tr,l,r));
	}
}ty;

int n;
set<int> st;

int get(int pos){
	int ans=1;
	for(int i=1;i<=pos;i++)ans=(int)(ans*1ll*x[i]%mod);
	assert(ans==tx.get(1,1,n,1,pos).first);
	return ans*1ll*y[pos]%mod;
	return tx.get(1,1,n,1,pos).first*1ll*y[pos]%mod;
}

int get(){
	{
		int pos=n;
		int per=x[n]*1ll*y[n]%mod;
		bool bf=0;
		if(x[n]*1ll*y[n]>=mod)bf=1;
		for(int i=n-1;i>=max(1,n-1000);i--){
			if(!bf&&y[i]>=per){
				pos=i;
				per=y[i];
				bf=0;
			}
			if(per*1ll*x[i]>=mod){
				bf=1;
			}
			per=per*1ll*x[i]%mod;
		}
		return get(pos);
	}
	st.insert(1);
	vector<int> vec;
	int pos=ty.get(1,1,n,*st.rbegin(),n).second;
	vec.push_back(*st.rbegin());
	st.erase(--st.end());
	while(!st.empty()){
		int pos1=ty.get(1,1,n,*st.rbegin(),vec.back()-1).second;
		vec.push_back(*st.rbegin());
		st.erase(--st.end());
		pair<int,bool> bf=tx.get(1,1,n,pos1+1,pos);
		if(bf.second||bf.first*1ll*y[pos]>=mod)break;
		if(bf.first*y[pos]<=y[pos1])pos=pos1;
	}
	for(int x:vec)st.insert(x);
	return get(pos);
}

int init(int N, int X[], int Y[]) {
	// cout<<"! "<<N<<"\n";
	n=N;
	for(int i=0;i<N;i++){
		y[i+1]=Y[i];
		x[i+1]=X[i];
		if(X[i]!=1){
			st.insert(i+1);
		}
	}
	n=N;
	tx.build(1,1,n);
	ty.build(1,1,n);
	return get();
}

int updateX(int pos, int val) {	
	// return 0;
	pos++;
	if(x[pos]!=1)st.erase(pos);
	x[pos]=val;
	tx.update(1,1,n,pos,val);
	if(x[pos]!=1)st.insert(pos);
	return get();
}

int updateY(int pos, int val) {
	// return 0;
	pos++;
	y[pos]=val;
	ty.update(1,1,n,pos,val);
	return get();
}

Compilation message

horses.cpp: In member function 'void segtree::update(int, int, int, int, int)':
horses.cpp:36:46: warning: declaration of 'x' shadows a global declaration [-Wshadow]
   36 |  void update(int v,int tl,int tr,int pos,int x){
      |                                          ~~~~^
horses.cpp:11:5: note: shadowed declaration is here
   11 | int x[MAX];
      |     ^
horses.cpp: In member function 'void segtreeMx::update(int, int, int, int, int)':
horses.cpp:76:46: warning: declaration of 'x' shadows a global declaration [-Wshadow]
   76 |  void update(int v,int tl,int tr,int pos,int x){
      |                                          ~~~~^
horses.cpp:11:5: note: shadowed declaration is here
   11 | int x[MAX];
      |     ^
horses.cpp: In function 'int get(int)':
horses.cpp:102:23: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  102 |  return ans*1ll*y[pos]%mod;
      |         ~~~~~~~~~~~~~~^~~~
horses.cpp:103:45: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  103 |  return tx.get(1,1,n,1,pos).first*1ll*y[pos]%mod;
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
horses.cpp: In function 'int get()':
horses.cpp:109:24: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  109 |   int per=x[n]*1ll*y[n]%mod;
      |           ~~~~~~~~~~~~~^~~~
horses.cpp:121:20: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
  121 |    per=per*1ll*x[i]%mod;
      |        ~~~~~~~~~~~~^~~~
horses.cpp:138:10: warning: declaration of 'x' shadows a global declaration [-Wshadow]
  138 |  for(int x:vec)st.insert(x);
      |          ^
horses.cpp:11:5: note: shadowed declaration is here
   11 | int x[MAX];
      |     ^

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6480 KB Output is correct
2 Correct 1 ms 6480 KB Output is correct
3 Correct 1 ms 6480 KB Output is correct
4 Correct 1 ms 6480 KB Output is correct
5 Correct 1 ms 6480 KB Output is correct
6 Correct 1 ms 6480 KB Output is correct
7 Correct 1 ms 6480 KB Output is correct
8 Correct 1 ms 6480 KB Output is correct
9 Correct 1 ms 6480 KB Output is correct
10 Correct 1 ms 6480 KB Output is correct
11 Correct 1 ms 6480 KB Output is correct
12 Correct 1 ms 6480 KB Output is correct
13 Correct 1 ms 6480 KB Output is correct
14 Correct 1 ms 6480 KB Output is correct
15 Correct 2 ms 6480 KB Output is correct
16 Correct 1 ms 6480 KB Output is correct
17 Correct 1 ms 6480 KB Output is correct
18 Correct 1 ms 6480 KB Output is correct
19 Correct 1 ms 6480 KB Output is correct
20 Correct 1 ms 6588 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6648 KB Output is correct
2 Correct 1 ms 6480 KB Output is correct
3 Correct 1 ms 6480 KB Output is correct
4 Correct 1 ms 6480 KB Output is correct
5 Correct 1 ms 6480 KB Output is correct
6 Correct 1 ms 6480 KB Output is correct
7 Correct 1 ms 6648 KB Output is correct
8 Correct 1 ms 6480 KB Output is correct
9 Correct 2 ms 6480 KB Output is correct
10 Correct 1 ms 6480 KB Output is correct
11 Correct 1 ms 6480 KB Output is correct
12 Correct 1 ms 6480 KB Output is correct
13 Correct 1 ms 6480 KB Output is correct
14 Correct 1 ms 6480 KB Output is correct
15 Correct 1 ms 6480 KB Output is correct
16 Correct 1 ms 6480 KB Output is correct
17 Correct 1 ms 6596 KB Output is correct
18 Correct 1 ms 6480 KB Output is correct
19 Correct 1 ms 6480 KB Output is correct
20 Correct 1 ms 6480 KB Output is correct
21 Correct 1 ms 6480 KB Output is correct
22 Correct 1 ms 6480 KB Output is correct
23 Correct 12 ms 8528 KB Output is correct
24 Correct 12 ms 8528 KB Output is correct
25 Correct 12 ms 8708 KB Output is correct
26 Correct 12 ms 8528 KB Output is correct
27 Correct 11 ms 8692 KB Output is correct
28 Correct 12 ms 8528 KB Output is correct
29 Correct 9 ms 8528 KB Output is correct
30 Correct 9 ms 8732 KB Output is correct
31 Correct 8 ms 8700 KB Output is correct
32 Correct 9 ms 8568 KB Output is correct

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1544 ms 54688 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6480 KB Output is correct
2 Correct 1 ms 6480 KB Output is correct
3 Correct 1 ms 6480 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6480 KB Output is correct
6 Correct 1 ms 6480 KB Output is correct
7 Correct 1 ms 6480 KB Output is correct
8 Correct 1 ms 6480 KB Output is correct
9 Correct 1 ms 6480 KB Output is correct
10 Correct 1 ms 6480 KB Output is correct
11 Correct 1 ms 6480 KB Output is correct
12 Correct 1 ms 6480 KB Output is correct
13 Correct 1 ms 6480 KB Output is correct
14 Correct 1 ms 6480 KB Output is correct
15 Correct 1 ms 6480 KB Output is correct
16 Correct 1 ms 6480 KB Output is correct
17 Correct 1 ms 6480 KB Output is correct
18 Correct 1 ms 6480 KB Output is correct
19 Correct 1 ms 6480 KB Output is correct
20 Correct 1 ms 6480 KB Output is correct
21 Correct 1 ms 6480 KB Output is correct
22 Correct 1 ms 6480 KB Output is correct
23 Correct 11 ms 8704 KB Output is correct
24 Correct 11 ms 8528 KB Output is correct
25 Correct 12 ms 8528 KB Output is correct
26 Correct 12 ms 8528 KB Output is correct
27 Correct 11 ms 8528 KB Output is correct
28 Correct 12 ms 8528 KB Output is correct
29 Correct 8 ms 8528 KB Output is correct
30 Correct 9 ms 8528 KB Output is correct
31 Correct 8 ms 8528 KB Output is correct
32 Correct 9 ms 8528 KB Output is correct
33 Execution timed out 1581 ms 31056 KB Time limit exceeded
34 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6480 KB Output is correct
2 Correct 1 ms 6480 KB Output is correct
3 Correct 2 ms 6480 KB Output is correct
4 Correct 1 ms 6480 KB Output is correct
5 Correct 1 ms 6480 KB Output is correct
6 Correct 1 ms 6480 KB Output is correct
7 Correct 1 ms 6480 KB Output is correct
8 Correct 1 ms 6480 KB Output is correct
9 Correct 1 ms 6480 KB Output is correct
10 Correct 1 ms 6480 KB Output is correct
11 Correct 1 ms 6480 KB Output is correct
12 Correct 2 ms 6648 KB Output is correct
13 Correct 1 ms 6480 KB Output is correct
14 Correct 2 ms 6480 KB Output is correct
15 Correct 1 ms 6480 KB Output is correct
16 Correct 1 ms 6480 KB Output is correct
17 Correct 1 ms 6480 KB Output is correct
18 Correct 1 ms 6480 KB Output is correct
19 Correct 1 ms 6480 KB Output is correct
20 Correct 1 ms 6480 KB Output is correct
21 Correct 1 ms 6480 KB Output is correct
22 Correct 2 ms 6480 KB Output is correct
23 Correct 12 ms 8692 KB Output is correct
24 Correct 12 ms 8528 KB Output is correct
25 Correct 11 ms 8528 KB Output is correct
26 Correct 12 ms 8528 KB Output is correct
27 Correct 12 ms 8528 KB Output is correct
28 Correct 12 ms 8732 KB Output is correct
29 Correct 8 ms 8676 KB Output is correct
30 Correct 10 ms 8528 KB Output is correct
31 Correct 8 ms 8528 KB Output is correct
32 Correct 9 ms 8528 KB Output is correct
33 Execution timed out 1563 ms 54608 KB Time limit exceeded
34 Halted 0 ms 0 KB -