0_0_36726027_8419.cpp:67:11: error: redefinition of 'const int maxn'
const int maxn=2e3+10;
^
0_0_36726027_8419.cpp:10:11: note: 'const int maxn' previously defined here
const int maxn=2e3+10;
^
0_0_36726027_8419.cpp:68:5: error: redefinition of 'int n'
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp:11:5: note: 'int n' previously declared here
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp:68:7: error: redefinition of 'int m'
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp:11:7: note: 'int m' previously declared here
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp:68:9: error: redefinition of 'int top'
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp:11:9: note: 'int top' previously declared here
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp:68:13: error: redefinition of 'int ans'
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp:11:13: note: 'int ans' previously declared here
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp:68:29: error: redefinition of 'int a [2010][2010]'
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp:11:17: note: 'int a [2010][2010]' previously declared here
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp:68:43: error: redefinition of 'int b [2010][2010]'
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp:11:31: note: 'int b [2010][2010]' previously declared here
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp:68:52: error: redefinition of 'int st [2010]'
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp:11:45: note: 'int st [2010]' previously declared here
int n,m,top,ans,a[maxn][maxn],b[maxn][maxn],st[maxn];
^
0_0_36726027_8419.cpp: In function 'int main()':
0_0_36726027_8419.cpp:69:5: error: redefinition of 'int main()'
int main()
^
0_0_36726027_8419.cpp:12:5: note: 'int main()' previously defined here
int main()
^
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