Submission #199197

#	Time	Username	Problem	Language	Result	Execution time	Memory
199197		arnold518	기억 압축 (JOI15_memory)	C++14	0 / 100	2816 ms	284028 KiB

memory

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

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

int Memory(int N, int M)
{
	int i, j;

	if(N%2) return -2;

	int pos=(M&31)+1, sz=(M>>5)&15, mask=M>>9;
	if(sz>N/2) return -2;
	if(mask>=(1<<sz)) return -2;
	if(pos==N+1)
	{
		if(sz==0 && mask==0) return -1;
		return -2;
	}
	if(pos>N) return -2;

	char t=Get(pos);

	if(t=='<')
	{
		mask<<=1; sz++;
		if(sz>N/2) return -2;
	}
	else if(t=='[')
	{
		mask<<=1; sz++;
		mask|=1;
		if(sz>N/2) return -2;
	}
	else if(t=='>')
	{
		if(sz==0) return -2;
		if(mask&1==1) return -2;
		sz--; mask>>=1;
	}
	else if(t==']')
	{
		if(sz==0) return -2;
		if(mask&1==0) return -2;
		sz--; mask>>=1;
	}
	pos++;

	return (mask<<9)|(sz<<5)|(pos-1);
}

Compilation message (stderr)

memory.cpp: In function 'int Memory(int, int)':
memory.cpp:41:12: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   if(mask&1==1) return -2;
           ~^~~
memory.cpp:47:12: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   if(mask&1==0) return -2;
           ~^~~
memory.cpp:11:6: warning: unused variable 'i' [-Wunused-variable]
  int i, j;
      ^
memory.cpp:11:9: warning: unused variable 'j' [-Wunused-variable]
  int i, j;
         ^

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 5
• Subtask 4: 0 / 5
• Subtask 5: 0 / 10
• Subtask 6: 0 / 60