Submission #58951

# Submission time Handle Problem Language Result Execution time Memory
58951 2018-07-19T21:27:36 Z TadijaSebez Snake Escaping (JOI18_snake_escaping) C++11
22 / 100
583 ms 66560 KB
#include <stdio.h>
const int N=1<<20;
int dp0[N],dp1[N],pc[N];
char s[N],t[20];
int min(int a, int b){ return a>b?b:a;}
int abs(int x){ return x>0?x:-x;}
int main()
{
	int n,q,i,mask;
	for(i=1;i<N;i++) pc[i]=pc[i-(i&-i)]+1;
	scanf("%i %i",&n,&q);
	scanf("%s",s);
	for(i=0;i<(1<<n);i++)
	{
		dp1[i]=dp0[i]=s[i]-'0';
	}
	for(i=0;i<n;i++)
	{
		for(mask=0;mask<(1<<n);mask++)
		{
			if((mask>>i)&1) dp0[mask^(1<<i)]+=dp0[mask];
			else dp1[mask^(1<<i)]+=dp1[mask];
		}
	}
	while(q--)
	{
		scanf("%s",t);
		int a=0,b=0,c=0;
		for(i=0;i<n;i++)
		{
			if(t[n-i-1]=='0') a+=1<<i;
			else if(t[n-i-1]=='1') b+=1<<i;
			else c+=1<<i;
		}
		int ans=0;
		if(pc[a]<=min(pc[b],pc[c]))
		{
			for(mask=a;;mask=(mask-1)&a)
			{
				//printf("a:%i %i\n",a,mask);
				int go=((1<<n)-1)^mask^c;
				if((pc[mask]&1)==(pc[a]&1)) ans+=dp0[go];
				else ans-=dp0[go];
				if(!mask) break;
			}
		}
		else if(pc[b]<=min(pc[a],pc[c]))
		{
			for(mask=b;;mask=(mask-1)&b)
			{
				//printf("b:%i %i\n",b,mask);
				if((pc[mask]&1)==(pc[b]&1)) ans+=dp1[mask|c];
				else ans-=dp1[mask|c];
				if(!mask) break;
			}
		}
		else
		{
			for(mask=c;;mask=(mask-1)&c)
			{
				//printf("c:%i %i\n",c,mask);
				ans+=s[mask|b]-'0';
				if(!mask) break;
			}
		}
		printf("%i\n",abs(ans));
	}
	return 0;
}

Compilation message

snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:11:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i %i",&n,&q);
  ~~~~~^~~~~~~~~~~~~~~
snake_escaping.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",s);
  ~~~~~^~~~~~~~
snake_escaping.cpp:27:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s",t);
   ~~~~~^~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 8 ms 4472 KB Output is correct
2 Correct 7 ms 4552 KB Output is correct
3 Correct 8 ms 4552 KB Output is correct
4 Correct 8 ms 4552 KB Output is correct
5 Correct 8 ms 4612 KB Output is correct
6 Correct 8 ms 4636 KB Output is correct
7 Correct 9 ms 4648 KB Output is correct
8 Correct 7 ms 4788 KB Output is correct
9 Correct 8 ms 4804 KB Output is correct
10 Correct 8 ms 4804 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 8 ms 4472 KB Output is correct
2 Correct 7 ms 4552 KB Output is correct
3 Correct 8 ms 4552 KB Output is correct
4 Correct 8 ms 4552 KB Output is correct
5 Correct 8 ms 4612 KB Output is correct
6 Correct 8 ms 4636 KB Output is correct
7 Correct 9 ms 4648 KB Output is correct
8 Correct 7 ms 4788 KB Output is correct
9 Correct 8 ms 4804 KB Output is correct
10 Correct 8 ms 4804 KB Output is correct
11 Correct 345 ms 13724 KB Output is correct
12 Correct 405 ms 13724 KB Output is correct
13 Correct 358 ms 13724 KB Output is correct
14 Correct 383 ms 13724 KB Output is correct
15 Correct 381 ms 14000 KB Output is correct
16 Correct 372 ms 14000 KB Output is correct
17 Correct 420 ms 14000 KB Output is correct
18 Correct 288 ms 14816 KB Output is correct
19 Correct 308 ms 14816 KB Output is correct
20 Correct 363 ms 14816 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 8 ms 4472 KB Output is correct
2 Correct 7 ms 4552 KB Output is correct
3 Correct 8 ms 4552 KB Output is correct
4 Correct 8 ms 4552 KB Output is correct
5 Correct 8 ms 4612 KB Output is correct
6 Correct 8 ms 4636 KB Output is correct
7 Correct 9 ms 4648 KB Output is correct
8 Correct 7 ms 4788 KB Output is correct
9 Correct 8 ms 4804 KB Output is correct
10 Correct 8 ms 4804 KB Output is correct
11 Correct 345 ms 13724 KB Output is correct
12 Correct 405 ms 13724 KB Output is correct
13 Correct 358 ms 13724 KB Output is correct
14 Correct 383 ms 13724 KB Output is correct
15 Correct 381 ms 14000 KB Output is correct
16 Correct 372 ms 14000 KB Output is correct
17 Correct 420 ms 14000 KB Output is correct
18 Correct 288 ms 14816 KB Output is correct
19 Correct 308 ms 14816 KB Output is correct
20 Correct 363 ms 14816 KB Output is correct
21 Correct 453 ms 16488 KB Output is correct
22 Correct 456 ms 16744 KB Output is correct
23 Correct 479 ms 16744 KB Output is correct
24 Correct 530 ms 16744 KB Output is correct
25 Correct 464 ms 19904 KB Output is correct
26 Correct 494 ms 19904 KB Output is correct
27 Correct 484 ms 19904 KB Output is correct
28 Correct 313 ms 20920 KB Output is correct
29 Correct 431 ms 20920 KB Output is correct
30 Correct 454 ms 21648 KB Output is correct
31 Correct 490 ms 21648 KB Output is correct
32 Correct 583 ms 21648 KB Output is correct
33 Correct 517 ms 23016 KB Output is correct
34 Correct 485 ms 23100 KB Output is correct
35 Correct 524 ms 23616 KB Output is correct
36 Correct 329 ms 23616 KB Output is correct
37 Correct 436 ms 26648 KB Output is correct
38 Correct 419 ms 26648 KB Output is correct
39 Correct 556 ms 26648 KB Output is correct
40 Correct 540 ms 26648 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 8 ms 4472 KB Output is correct
2 Correct 7 ms 4552 KB Output is correct
3 Correct 8 ms 4552 KB Output is correct
4 Correct 8 ms 4552 KB Output is correct
5 Correct 8 ms 4612 KB Output is correct
6 Correct 8 ms 4636 KB Output is correct
7 Correct 9 ms 4648 KB Output is correct
8 Correct 7 ms 4788 KB Output is correct
9 Correct 8 ms 4804 KB Output is correct
10 Correct 8 ms 4804 KB Output is correct
11 Correct 110 ms 32120 KB Output is correct
12 Correct 99 ms 34288 KB Output is correct
13 Correct 147 ms 36156 KB Output is correct
14 Correct 192 ms 38420 KB Output is correct
15 Correct 116 ms 40368 KB Output is correct
16 Correct 182 ms 42344 KB Output is correct
17 Correct 130 ms 44548 KB Output is correct
18 Correct 87 ms 46728 KB Output is correct
19 Correct 113 ms 48468 KB Output is correct
20 Correct 106 ms 50688 KB Output is correct
21 Correct 124 ms 52644 KB Output is correct
22 Correct 154 ms 54660 KB Output is correct
23 Correct 104 ms 56736 KB Output is correct
24 Correct 178 ms 58764 KB Output is correct
25 Correct 141 ms 60856 KB Output is correct
26 Correct 78 ms 62792 KB Output is correct
27 Correct 97 ms 65016 KB Output is correct
28 Runtime error 102 ms 66560 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
29 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 8 ms 4472 KB Output is correct
2 Correct 7 ms 4552 KB Output is correct
3 Correct 8 ms 4552 KB Output is correct
4 Correct 8 ms 4552 KB Output is correct
5 Correct 8 ms 4612 KB Output is correct
6 Correct 8 ms 4636 KB Output is correct
7 Correct 9 ms 4648 KB Output is correct
8 Correct 7 ms 4788 KB Output is correct
9 Correct 8 ms 4804 KB Output is correct
10 Correct 8 ms 4804 KB Output is correct
11 Correct 345 ms 13724 KB Output is correct
12 Correct 405 ms 13724 KB Output is correct
13 Correct 358 ms 13724 KB Output is correct
14 Correct 383 ms 13724 KB Output is correct
15 Correct 381 ms 14000 KB Output is correct
16 Correct 372 ms 14000 KB Output is correct
17 Correct 420 ms 14000 KB Output is correct
18 Correct 288 ms 14816 KB Output is correct
19 Correct 308 ms 14816 KB Output is correct
20 Correct 363 ms 14816 KB Output is correct
21 Correct 453 ms 16488 KB Output is correct
22 Correct 456 ms 16744 KB Output is correct
23 Correct 479 ms 16744 KB Output is correct
24 Correct 530 ms 16744 KB Output is correct
25 Correct 464 ms 19904 KB Output is correct
26 Correct 494 ms 19904 KB Output is correct
27 Correct 484 ms 19904 KB Output is correct
28 Correct 313 ms 20920 KB Output is correct
29 Correct 431 ms 20920 KB Output is correct
30 Correct 454 ms 21648 KB Output is correct
31 Correct 490 ms 21648 KB Output is correct
32 Correct 583 ms 21648 KB Output is correct
33 Correct 517 ms 23016 KB Output is correct
34 Correct 485 ms 23100 KB Output is correct
35 Correct 524 ms 23616 KB Output is correct
36 Correct 329 ms 23616 KB Output is correct
37 Correct 436 ms 26648 KB Output is correct
38 Correct 419 ms 26648 KB Output is correct
39 Correct 556 ms 26648 KB Output is correct
40 Correct 540 ms 26648 KB Output is correct
41 Correct 110 ms 32120 KB Output is correct
42 Correct 99 ms 34288 KB Output is correct
43 Correct 147 ms 36156 KB Output is correct
44 Correct 192 ms 38420 KB Output is correct
45 Correct 116 ms 40368 KB Output is correct
46 Correct 182 ms 42344 KB Output is correct
47 Correct 130 ms 44548 KB Output is correct
48 Correct 87 ms 46728 KB Output is correct
49 Correct 113 ms 48468 KB Output is correct
50 Correct 106 ms 50688 KB Output is correct
51 Correct 124 ms 52644 KB Output is correct
52 Correct 154 ms 54660 KB Output is correct
53 Correct 104 ms 56736 KB Output is correct
54 Correct 178 ms 58764 KB Output is correct
55 Correct 141 ms 60856 KB Output is correct
56 Correct 78 ms 62792 KB Output is correct
57 Correct 97 ms 65016 KB Output is correct
58 Runtime error 102 ms 66560 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
59 Halted 0 ms 0 KB -