随笔分类 -  分治

摘要：#include <cstdio>#include <iostream>using namespace std;int solve(int l, int r) { if (l == r) return l; return solve(l, ((l+r)>>1)) + solve(((l+r)>>1)+1, r);}int main() { int n; while (scanf("%d", &n) != EOF) { int ans = solve(1, n); printf ("%d\n\n", 阅读全文