Submission #58950

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
58950	2018-07-19T21:27:04 Z	TadijaSebez	Snake Escaping (JOI18_snake_escaping)	C++11	12 / 100	668 ms	66560 KB

snake_escaping

#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);
   ~~~~~^~~~~~~~

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	4472 KB	Output is correct
2	Correct	7 ms	4552 KB	Output is correct
3	Correct	7 ms	4552 KB	Output is correct
4	Correct	11 ms	4552 KB	Output is correct
5	Correct	9 ms	4556 KB	Output is correct
6	Correct	9 ms	4564 KB	Output is correct
7	Correct	9 ms	4704 KB	Output is correct
8	Correct	8 ms	4704 KB	Output is correct
9	Correct	6 ms	4704 KB	Output is correct
10	Correct	9 ms	4704 KB	Output is correct

Subtask #2
7.0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	4472 KB	Output is correct
2	Correct	7 ms	4552 KB	Output is correct
3	Correct	7 ms	4552 KB	Output is correct
4	Correct	11 ms	4552 KB	Output is correct
5	Correct	9 ms	4556 KB	Output is correct
6	Correct	9 ms	4564 KB	Output is correct
7	Correct	9 ms	4704 KB	Output is correct
8	Correct	8 ms	4704 KB	Output is correct
9	Correct	6 ms	4704 KB	Output is correct
10	Correct	9 ms	4704 KB	Output is correct
11	Correct	376 ms	13808 KB	Output is correct
12	Correct	400 ms	13808 KB	Output is correct
13	Correct	456 ms	13808 KB	Output is correct
14	Correct	380 ms	13808 KB	Output is correct
15	Correct	388 ms	13944 KB	Output is correct
16	Correct	437 ms	13944 KB	Output is correct
17	Correct	453 ms	13944 KB	Output is correct
18	Correct	429 ms	14904 KB	Output is correct
19	Correct	348 ms	14904 KB	Output is correct
20	Correct	360 ms	14904 KB	Output is correct

Subtask #3
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	4472 KB	Output is correct
2	Correct	7 ms	4552 KB	Output is correct
3	Correct	7 ms	4552 KB	Output is correct
4	Correct	11 ms	4552 KB	Output is correct
5	Correct	9 ms	4556 KB	Output is correct
6	Correct	9 ms	4564 KB	Output is correct
7	Correct	9 ms	4704 KB	Output is correct
8	Correct	8 ms	4704 KB	Output is correct
9	Correct	6 ms	4704 KB	Output is correct
10	Correct	9 ms	4704 KB	Output is correct
11	Correct	376 ms	13808 KB	Output is correct
12	Correct	400 ms	13808 KB	Output is correct
13	Correct	456 ms	13808 KB	Output is correct
14	Correct	380 ms	13808 KB	Output is correct
15	Correct	388 ms	13944 KB	Output is correct
16	Correct	437 ms	13944 KB	Output is correct
17	Correct	453 ms	13944 KB	Output is correct
18	Correct	429 ms	14904 KB	Output is correct
19	Correct	348 ms	14904 KB	Output is correct
20	Correct	360 ms	14904 KB	Output is correct
21	Correct	405 ms	16636 KB	Output is correct
22	Correct	403 ms	16656 KB	Output is correct
23	Correct	482 ms	16656 KB	Output is correct
24	Correct	483 ms	16656 KB	Output is correct
25	Correct	412 ms	19964 KB	Output is correct
26	Correct	485 ms	19964 KB	Output is correct
27	Correct	473 ms	19964 KB	Output is correct
28	Correct	305 ms	20984 KB	Output is correct
29	Correct	381 ms	20984 KB	Output is correct
30	Correct	542 ms	21580 KB	Output is correct
31	Correct	426 ms	21580 KB	Output is correct
32	Correct	548 ms	21740 KB	Output is correct
33	Correct	423 ms	23120 KB	Output is correct
34	Correct	462 ms	23192 KB	Output is correct
35	Correct	537 ms	23452 KB	Output is correct
36	Correct	310 ms	23452 KB	Output is correct
37	Correct	439 ms	37932 KB	Output is correct
38	Correct	428 ms	49664 KB	Output is correct
39	Correct	668 ms	64416 KB	Output is correct
40	Runtime error	503 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.

Subtask #4
0 / 53.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	4472 KB	Output is correct
2	Correct	7 ms	4552 KB	Output is correct
3	Correct	7 ms	4552 KB	Output is correct
4	Correct	11 ms	4552 KB	Output is correct
5	Correct	9 ms	4556 KB	Output is correct
6	Correct	9 ms	4564 KB	Output is correct
7	Correct	9 ms	4704 KB	Output is correct
8	Correct	8 ms	4704 KB	Output is correct
9	Correct	6 ms	4704 KB	Output is correct
10	Correct	9 ms	4704 KB	Output is correct
11	Runtime error	94 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.
12	Halted	0 ms	0 KB	-

Subtask #5
0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	4472 KB	Output is correct
2	Correct	7 ms	4552 KB	Output is correct
3	Correct	7 ms	4552 KB	Output is correct
4	Correct	11 ms	4552 KB	Output is correct
5	Correct	9 ms	4556 KB	Output is correct
6	Correct	9 ms	4564 KB	Output is correct
7	Correct	9 ms	4704 KB	Output is correct
8	Correct	8 ms	4704 KB	Output is correct
9	Correct	6 ms	4704 KB	Output is correct
10	Correct	9 ms	4704 KB	Output is correct
11	Correct	376 ms	13808 KB	Output is correct
12	Correct	400 ms	13808 KB	Output is correct
13	Correct	456 ms	13808 KB	Output is correct
14	Correct	380 ms	13808 KB	Output is correct
15	Correct	388 ms	13944 KB	Output is correct
16	Correct	437 ms	13944 KB	Output is correct
17	Correct	453 ms	13944 KB	Output is correct
18	Correct	429 ms	14904 KB	Output is correct
19	Correct	348 ms	14904 KB	Output is correct
20	Correct	360 ms	14904 KB	Output is correct
21	Correct	405 ms	16636 KB	Output is correct
22	Correct	403 ms	16656 KB	Output is correct
23	Correct	482 ms	16656 KB	Output is correct
24	Correct	483 ms	16656 KB	Output is correct
25	Correct	412 ms	19964 KB	Output is correct
26	Correct	485 ms	19964 KB	Output is correct
27	Correct	473 ms	19964 KB	Output is correct
28	Correct	305 ms	20984 KB	Output is correct
29	Correct	381 ms	20984 KB	Output is correct
30	Correct	542 ms	21580 KB	Output is correct
31	Correct	426 ms	21580 KB	Output is correct
32	Correct	548 ms	21740 KB	Output is correct
33	Correct	423 ms	23120 KB	Output is correct
34	Correct	462 ms	23192 KB	Output is correct
35	Correct	537 ms	23452 KB	Output is correct
36	Correct	310 ms	23452 KB	Output is correct
37	Correct	439 ms	37932 KB	Output is correct
38	Correct	428 ms	49664 KB	Output is correct
39	Correct	668 ms	64416 KB	Output is correct
40	Runtime error	503 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.

Submission #58950

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 7.0 / 7.0

Subtask #3 0 / 10.0

Subtask #4 0 / 53.0

Subtask #5 0 / 25.0

Subtask #1
5.0 / 5.0

Subtask #2
7.0 / 7.0

Subtask #3
0 / 10.0

Subtask #4
0 / 53.0

Subtask #5
0 / 25.0