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题目链接刘汝佳算法竞赛经典入门训练指南p42代码1:#include #include #include using namespace std;int next(int n, int k){ stringstream ss; ss n) s = s.substr(0, n); int ans = 0; stringstream ss2(s); ss2 >> ans; return ans;}int main(){ int t; int n, k; cin>>t; while (t--) { cin... 阅读全文