QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#110869 | #6563. Four Square | He_Ren# | AC ✓ | 9ms | 4076kb | C++17 | 1.4kb | 2023-06-04 14:16:42 | 2023-06-04 14:16:46 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
const int MAXN = 2e3 + 5;
#define bbit(i) (1<<(i))
#define bdig(x,i) (((x)>>(i))&1)
const int n = 4;
int d;
array<int,2> a[n+1];
using Data = bitset<MAXN>;
Data b[MAXN];
Data getData(int l,int r)
{
Data res;
res.set();
return (res >> (MAXN - (r-l+1))) << l;
}
bool check(void)
{
for(int i=0; i<d; ++i)
b[i].set();
for(int i=1,x=0; i<=n; ++i)
{
int y = -1;
while(x<d && (y = b[x]._Find_first()) >= d)
++x;
if(x + a[i][0] - 1 >= d || y + a[i][1] - 1 >= d)
return 0;
Data cur = getData(y, y + a[i][1] - 1);
for(int j=x; j<x+a[i][0]; ++j)
{
if((int)(b[j] & cur).count() != a[i][1]) return 0;
b[j] ^= cur;
}
}
return 1;
}
int main(void)
{
for(int i=1; i<=n; ++i)
scanf("%d%d",&a[i][0], &a[i][1]);
int sum = 0;
for(int i=1; i<=n; ++i)
sum += a[i][0] * a[i][1];
d = sqrt(sum) + 5;
while(d * d > sum) --d;
if(d * d != sum)
{
printf("0\n");
return 0;
}
sort(a+1, a+n+1);
do
{
for(int mask=0; mask<(1<<n); ++mask)
{
for(int i=1; i<=n; ++i) if(bdig(mask, i-1))
swap(a[i][0], a[i][1]);
if(check())
{
printf("1\n");
return 0;
}
for(int i=1; i<=n; ++i) if(bdig(mask, i-1))
swap(a[i][0], a[i][1]);
}
}while(next_permutation(a+1, a+n+1));
printf("0\n");
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 2ms
memory: 3536kb
input:
1 1 1 1 1 1 1 1
output:
1
result:
ok single line: '1'
Test #2:
score: 0
Accepted
time: 2ms
memory: 3684kb
input:
3 1 3 3 2 2 3 3
output:
0
result:
ok single line: '0'
Test #3:
score: 0
Accepted
time: 1ms
memory: 3720kb
input:
2 8 2 8 2 8 2 8
output:
1
result:
ok single line: '1'
Test #4:
score: 0
Accepted
time: 2ms
memory: 3580kb
input:
5 3 5 5 3 3 3 5
output:
1
result:
ok single line: '1'
Test #5:
score: 0
Accepted
time: 2ms
memory: 3504kb
input:
1 2 4 8 16 32 64 128
output:
0
result:
ok single line: '0'
Test #6:
score: 0
Accepted
time: 2ms
memory: 3612kb
input:
4 4 2 1 4 4 2 1
output:
0
result:
ok single line: '0'
Test #7:
score: 0
Accepted
time: 7ms
memory: 3920kb
input:
995 51 559 565 154 536 56 780
output:
0
result:
ok single line: '0'
Test #8:
score: 0
Accepted
time: 9ms
memory: 3704kb
input:
391 694 540 42 240 937 691 246
output:
0
result:
ok single line: '0'
Test #9:
score: 0
Accepted
time: 8ms
memory: 3760kb
input:
519 411 782 710 299 45 21 397
output:
0
result:
ok single line: '0'
Test #10:
score: 0
Accepted
time: 6ms
memory: 3676kb
input:
96 960 948 18 108 82 371 576
output:
0
result:
ok single line: '0'
Test #11:
score: 0
Accepted
time: 0ms
memory: 3628kb
input:
3 2 4 3 3 1 1 4
output:
0
result:
ok single line: '0'
Test #12:
score: 0
Accepted
time: 0ms
memory: 3608kb
input:
4 3 1 2 4 4 3 2
output:
0
result:
ok single line: '0'
Test #13:
score: 0
Accepted
time: 3ms
memory: 3748kb
input:
4 4 1 3 5 4 2 5
output:
0
result:
ok single line: '0'
Test #14:
score: 0
Accepted
time: 3ms
memory: 4040kb
input:
1000 1000 1000 1000 1000 1000 1000 1000
output:
1
result:
ok single line: '1'
Test #15:
score: 0
Accepted
time: 2ms
memory: 4076kb
input:
1000 999 998 1000 997 1000 997 997
output:
1
result:
ok single line: '1'
Test #16:
score: 0
Accepted
time: 2ms
memory: 3540kb
input:
1 3 3 3 3 3 4 7
output:
1
result:
ok single line: '1'
Test #17:
score: 0
Accepted
time: 2ms
memory: 3616kb
input:
2 5 5 4 7 1 6 2
output:
1
result:
ok single line: '1'
Test #18:
score: 0
Accepted
time: 1ms
memory: 3688kb
input:
12 2 12 7 7 12 16 4
output:
1
result:
ok single line: '1'
Test #19:
score: 0
Accepted
time: 1ms
memory: 3544kb
input:
7 2 2 14 5 14 7 12
output:
1
result:
ok single line: '1'
Test #20:
score: 0
Accepted
time: 2ms
memory: 3744kb
input:
32 36 5 1 1 37 35 5
output:
1
result:
ok single line: '1'
Test #21:
score: 0
Accepted
time: 0ms
memory: 3492kb
input:
28 30 30 1 31 1 2 30
output:
1
result:
ok single line: '1'
Test #22:
score: 0
Accepted
time: 1ms
memory: 3752kb
input:
66 68 9 11 7 66 9 64
output:
1
result:
ok single line: '1'
Test #23:
score: 0
Accepted
time: 2ms
memory: 3644kb
input:
59 44 25 44 40 32 40 52
output:
1
result:
ok single line: '1'
Test #24:
score: 0
Accepted
time: 1ms
memory: 3612kb
input:
4 4 2 3 4 2 3 2
output:
1
result:
ok single line: '1'