Submission #5103574


Source Code Expand

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<iostream>
#define LL long long
using namespace std;
const LL mod=998244353;
LL n,m,a[310][310],cnt=0;
LL c[310][310];
LL Pow(LL a,LL b)
{
	LL ans=1;
	while(b)
	{
		if(b&1) ans=ans*a%mod;
		a=a*a%mod;b>>=1;
	}
	return ans;
}
int main()
{
	scanf("%lld %lld",&n,&m);
	for(LL i=1;i<=n;i++)
	{
		for(LL j=1;j<=m;j++) scanf("%lld",&a[i][j]);
		for(LL j=1;j<=m;j++)
		{
			if(!a[i][j]) continue;
			if(!c[j][j])
			{
				for(LL k=j;k<=m;k++) c[j][k]=a[i][k];
				cnt++;break;
			}
			else for(LL k=j;k<=m;k++) a[i][k]^=c[j][k];
		}
	}
	printf("%lld",(Pow(2,n)-Pow(2,n-cnt)+mod)%mod*Pow(2,m-1)%mod);
}

Submission Info

Submission Time
Task E - Odd Subrectangles
User dddddw
Language C++14 (GCC 5.4.1)
Score 800
Code Size 692 Byte
Status AC
Exec Time 12 ms
Memory 1664 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:22:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld %lld",&n,&m);
                          ^
./Main.cpp:25:46: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   for(LL j=1;j<=m;j++) scanf("%lld",&a[i][j]);
                                              ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 800 / 800
Status
AC × 2
AC × 50
Set Name Test Cases
Sample s1.txt, s2.txt
All 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, 43.txt, 44.txt, 45.txt, 46.txt, 47.txt, 48.txt, s1.txt, s2.txt
Case Name Status Exec Time Memory
01.txt AC 12 ms 1664 KB
02.txt AC 12 ms 1664 KB
03.txt AC 12 ms 1664 KB
04.txt AC 12 ms 1664 KB
05.txt AC 12 ms 1664 KB
06.txt AC 12 ms 1664 KB
07.txt AC 12 ms 1664 KB
08.txt AC 12 ms 1664 KB
09.txt AC 12 ms 1664 KB
10.txt AC 12 ms 1664 KB
11.txt AC 8 ms 1024 KB
12.txt AC 8 ms 1024 KB
13.txt AC 8 ms 1024 KB
14.txt AC 9 ms 1024 KB
15.txt AC 9 ms 1024 KB
16.txt AC 9 ms 1024 KB
17.txt AC 10 ms 1152 KB
18.txt AC 12 ms 1408 KB
19.txt AC 12 ms 1664 KB
20.txt AC 8 ms 1024 KB
21.txt AC 4 ms 1024 KB
22.txt AC 2 ms 512 KB
23.txt AC 2 ms 640 KB
24.txt AC 4 ms 768 KB
25.txt AC 1 ms 384 KB
26.txt AC 2 ms 384 KB
27.txt AC 3 ms 512 KB
28.txt AC 2 ms 768 KB
29.txt AC 1 ms 256 KB
30.txt AC 5 ms 1152 KB
31.txt AC 4 ms 640 KB
32.txt AC 5 ms 768 KB
33.txt AC 5 ms 640 KB
34.txt AC 4 ms 640 KB
35.txt AC 4 ms 896 KB
36.txt AC 2 ms 512 KB
37.txt AC 2 ms 512 KB
38.txt AC 5 ms 1152 KB
39.txt AC 8 ms 1408 KB
40.txt AC 2 ms 768 KB
41.txt AC 1 ms 256 KB
42.txt AC 1 ms 256 KB
43.txt AC 1 ms 256 KB
44.txt AC 1 ms 256 KB
45.txt AC 1 ms 256 KB
46.txt AC 1 ms 256 KB
47.txt AC 1 ms 256 KB
48.txt AC 1 ms 256 KB
s1.txt AC 1 ms 256 KB
s2.txt AC 1 ms 256 KB