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Submission #199201

# Submission time Handle Problem Language Result Execution time Memory
199201 2020-01-30T03:45:44 Z arnold518 None (JOI15_memory) C++14
0 / 100
 2756 ms 283936 KB 
#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;

	if(M==0) return 33;
	int pos=(M&31), mask=M>>5, sz;

	if(mask==0) return -2;
	if(pos==0) return -2;

	for(i=16; i>=0; i--) if(mask&(1<<i)) { sz=16-i; break; }

	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<<5)|pos;
}

Compilation message

memory.cpp: In function 'int Memory(int, int)':
memory.cpp:11:9: warning: unused variable 'j' [-Wunused-variable]
  int i, j;
         ^
memory.cpp:53:3: warning: 'sz' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(sz==0) return -2;
   ^~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2653 ms 283936 KB Output is correct
2 Incorrect 2756 ms 283688 KB Wrong Answer [6]
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2653 ms 283936 KB Output is correct
2 Incorrect 2756 ms 283688 KB Wrong Answer [6]
3 Halted 0 ms 0 KB -

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2653 ms 283936 KB Output is correct
2 Incorrect 2756 ms 283688 KB Wrong Answer [6]
3 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2653 ms 283936 KB Output is correct
2 Incorrect 2756 ms 283688 KB Wrong Answer [6]
3 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2729 ms 283868 KB Wrong Answer [6]

Subtask #6
0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 2653 ms 283936 KB Output is correct
2 Incorrect 2756 ms 283688 KB Wrong Answer [6]
3 Halted 0 ms 0 KB -