Submission #121232

#	Time	Username	Problem	Language	Result	Execution time	Memory
121232		baluteshih	크레이피쉬 글쓰는 기계 (IOI12_scrivener)	C++14	34 / 100	653 ms	262144 KiB

scrivener

#include <bits/stdc++.h>
#define jizz ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define pb push_back
#define ET cout << "\n"
#define MEM(i,j) memset(i,j,sizeof i)
#define F first
#define S second
#define MP make_pair
#define ALL(v) v.begin(),v.end()
#define DB(a,s,e) {for(int i=s;i<e;++i) cout << a[i] << " ";ET;}
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

struct node
{
	char c;
	node *l,*r;
	node(char c=0):c(c),l(0),r(0){}
}*root[1000005];

int t,Len[1000005];
const int C=999999;

node *modify(int x,int l,int r,node *p,char c)
{
	if(!p) p=new node();
	else p=new node(*p);
	int m=l+r>>1;
	if(m==x) return p->c=c,p;
	if(x<m) p->l=modify(x,l,m-1,p->l,c);
	else p->r=modify(x,m+1,r,p->r,c);
	return p;
}

char query(int x,int l,int r,node *p)
{
	int m=l+r>>1;
	if(m==x) return p->c;
	if(x<m) return query(x,l,m-1,p->l);
	return query(x,m+1,r,p->r);
}

void Init(){
	t=0,Len[0]=-1;
}

void TypeLetter(char L) 
{
	++t,root[t]=modify(Len[t-1]+1,0,C,root[t-1],L),Len[t]=Len[t-1]+1;
}

void UndoCommands(int U)
{
	++t,root[t]=root[t-U-1],Len[t]=Len[t-U-1];
}

char GetLetter(int P)
{
	return query(P,0,C,root[t]);
}

Compilation message (stderr)

scrivener.cpp: In function 'node* modify(int, int, int, node*, char)':
scrivener.cpp:30:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m=l+r>>1;
        ~^~
scrivener.cpp: In function 'char query(int, int, int, node*)':
scrivener.cpp:39:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m=l+r>>1;
        ~^~

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 22 / 22
• Subtask 4: 0 / 26
• Subtask 5: 0 / 40