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#include
#include
#include
#include
using
#define
#define
#define
#define
typedef
typedef
const
//head
const
int
int
int
int
int
int
rep(i,0
rep(j,0
st[i][j+1
st2[i][j+1
}
}
int
int
return
}
int
int
return
}
int
#ifdef
freopen("shui.in"
#endif
while
rep(i,0
ST();
while
int
l--,r--;
printf
}
}
return
}