제출 #81921

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
81921		GioChkhaidze	말 (IOI15_horses)	C++14	17 / 100	1259 ms	61600 KiB

horses

#include "horses.h"
#include <bits/stdc++.h>
using namespace std;

#define Tree int h,int l,int r
#define left 2*h,l,(l+r)/2
#define right 2*h+1,(l+r)/2+1,r
#define Pb push_back
#define F first
#define S second

long long Inf=1000000008,Mod=1000000007;
long long P,n,x[500002],y[500002],ANS;
long long Ind,Z;
long long v[3000002];
pair < long long , long long > vy[3000002];
set < long long > st;
set <long long > :: iterator it;
vector < long long > V;
pair < long long , long long > X;
long long L,R;

void Update(Tree)
{
	if (l>L || r<L) return ;
	if (L==l && r==L) { v[h]=R%Mod; return ; }
	
	Update(left);
	Update(right);
	
	v[h]=(1LL*v[2*h]*v[2*h+1])%Mod;
}
long long Get(Tree)
{
	if (L>r || l>R) return 1;
	if (L<=l && r<=R) return v[h];
	
	return (1LL*Get(left)*Get(right))%Mod;
}
void Upy(Tree)
{
	if (l>L || r<L) return ;
	if (L==l && r==L) { vy[h].F=R; vy[h].S=L; return ; }
	
	Upy(left);
	Upy(right);
	
	if (vy[2*h].F>vy[2*h+1].F) vy[h]=vy[2*h];
						  else vy[h]=vy[2*h+1];
}

pair < long long , long long > Gety(Tree)
{
	if (L>r || l>R) return make_pair(0,0);
	if (L<=l && r<=R) return make_pair(vy[h].F,vy[h].S);
	
	pair < long long , long long > X1=Gety(left);
	pair < long long , long long > X2=Gety(right);
	
	if (X1.F>X2.F) return X1;
		return X2;
}

int init(int N, int X[], int Y[]) {

	n=N;
	
	for (int i=0; i<n; i++)
		x[i]=X[i],y[i]=Y[i];
	
	for (int i=0; i<n; i++)
	{
		L=i; R=x[i];
		Update(1,0,n-1);
		if (x[i]>1) st.insert(i);
	}
	
	for (int i=0; i<n; i++)
	{
		L=i; R=y[i];
		Upy(1,0,n-1);
	}
	
	Ind=0;
	P=1;
		
	for (int j=1; j<n; j++)
	{
		if (1LL*P*x[j]<Inf) P*=x[j];
				       else P=Inf;
				   
		if (y[Ind]<1LL*P*y[j]) P=1,Ind=j;	
	}
	
	L=0; R=Ind;
	
	ANS=(1LL*Get(1,0,n-1)*y[Ind])%Mod;

	return ANS;
}

long long Ann()
{
	it=st.end();
	V.clear();
			
	Z=0;	
			
	while (it!=st.begin())
	{
		Z++;
		it--;
		V.Pb((*it));
		if (Z>35) break;
	}
		
	if (!V.size() || V[V.size()-1]!=0) V.Pb(0);	
	reverse(V.begin(),V.end());
	if (!V.size() || V[V.size()-1]!=n-1) V.Pb(n-1);		
		
	Ind=0;
	P=1;
		
	for (int i=0; i<V.size(); i++)
	{
		if (1LL*P*x[V[i]]<Inf) P*=x[V[i]];
				      	  else P=Inf;
				   
		if (y[Ind]<1LL*P*y[V[i]]) P=1,Ind=V[i];
				
		if (i==V.size()-1) continue;
		
		L=V[i]+1; R=V[i+1]-1;	
				
		X=Gety(1,0,n-1);
				
		if (y[Ind]<1LL*P*X.F) P=1,Ind=X.S;
	}
			
	L=0; R=Ind;		
				
	ANS=(1LL*Get(1,0,n-1)*y[Ind])%Mod;
	
	return ANS;
}

int updateX(int pos, int val) {	

	if (x[pos]==1 && val>1) st.insert(pos);
			else
	if (x[pos]>1 && val==1) st.erase(st.find(pos));
			
	x[pos]=val;
		
	Update(1,0,n-1);
			
	return Ann();
}

int updateY(int pos, int val) {
	
	y[pos]=val;
	Upy(1,0,n-1);
			
	return Ann();
}

컴파일 시 표준 에러 (stderr) 메시지

horses.cpp: In function 'int init(int, int*, int*)':
horses.cpp:64:33: warning: declaration of 'X' shadows a global declaration [-Wshadow]
 int init(int N, int X[], int Y[]) {
                                 ^
horses.cpp:20:32: note: shadowed declaration is here
 pair < long long , long long > X;
                                ^
horses.cpp:74:15: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
   Update(1,0,n-1);
              ~^~
horses.cpp:81:12: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
   Upy(1,0,n-1);
           ~^~
horses.cpp:97:20: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
  ANS=(1LL*Get(1,0,n-1)*y[Ind])%Mod;
                   ~^~
horses.cpp:99:9: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
  return ANS;
         ^~~
horses.cpp: In function 'long long int Ann()':
horses.cpp:124:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<V.size(); i++)
                ~^~~~~~~~~
horses.cpp:131:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (i==V.size()-1) continue;
       ~^~~~~~~~~~~~
horses.cpp:135:15: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
   X=Gety(1,0,n-1);
              ~^~
horses.cpp:142:20: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
  ANS=(1LL*Get(1,0,n-1)*y[Ind])%Mod;
                   ~^~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:155:14: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
  Update(1,0,n-1);
             ~^~
horses.cpp:157:12: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
  return Ann();
         ~~~^~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:163:11: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
  Upy(1,0,n-1);
          ~^~
horses.cpp:165:12: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
  return Ann();
         ~~~^~

• Subtask 1: 17 / 17
• Subtask 2: 0 / 17
• Subtask 3: 0 / 20
• Subtask 4: 0 / 23
• Subtask 5: 0 / 23