var t, m, n: longint; function g(m, n, x: longint):longint; var i, ans:longint; begin ans := 0; if (n = 1) then exit(1); for i:=x to m div n do ans := ans + g(m - i, n - 1, i); exit(ans); end; begin read(m, n); writeln(g(m, n, 0)); end.
输入:7 3
输出:1
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