#include
<
iostream
>
using
namespace
std;
int
n;
bool
a[
1010
][
1010
];
bool
f[
1010
][
1010
];
int
Win[
501
];
int
main()
{
scanf(
"
%d
"
,
&
n);
for
(
int
i
=
1
;i
<=
n;
++
i)
for
(
int
j
=
1
;j
<=
n;
++
j){
int
c;
scanf(
"
%d
"
,
&
c);
a[i][j]
=
a[i
+
n][j]
=
a[i][j
+
n]
=
a[i
+
n][j
+
n]
=
c
==
1
;
}
for
(
int
i
=
1
;i
<=
2
*
n;
++
i)
f[i][i
+
1
]
=
1
;
for
(
int
k
=
3
;k
<=
n
+
1
;
++
k)
for
(
int
i
=
1
;i
<=
2
*
n
-
k
+
1
;
++
i){
int
j
=
i
+
k
-
1
;
for
(
int
t
=
i
+
1
;t
<
j;
++
t)
if
(f[i][t]
&&
f[t][j]
&&
(a[i][t]
||
a[j][t])){
f[i][j]
=
1
;
break
;
}
}
int
l
=
0
;
for
(
int
i
=
1
;i
<=
n;
++
i)
if
(f[i][i
+
n])
Win[
++
l]
=
i;
printf(
"
%d\n
"
,l);
for
(
int
i
=
1
;i
<=
l;
++
i)
printf(
"
%d\n
"
,Win[i]);
return
0
;
}
posted on 2009-05-03 10:09
xfstart07 阅读(122)
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