NOIP2018 阅读程序
3.
#include <iostream> using namespace std; int n, m; int findans(int n, int m) { if (n == 0) return m; if (m == 0) return n % 3; return findans(n-1, m) - findans(n, m-1) + findans(n-1, m-1); } int main() { cin >> n >> m; cout << findans(n, m) << endl; return 0; }
输入:5 6 输出:_________
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