0_0_15975902_138.cpp:34:11: error: redefinition of 'const int maxn'
const int maxn=5010;
^
0_0_15975902_138.cpp:9:11: note: 'const int maxn' previously defined here
const int maxn=5010;
^
0_0_15975902_138.cpp: In function 'int main()':
0_0_15975902_138.cpp:77:5: error: redefinition of 'int main()'
int main()
^
0_0_15975902_138.cpp:12:5: note: 'int main()' previously defined here
int main()
^
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