imsbNR @ 2024-08-17 17:04:34
本人刚学 c++ 两天，现在 c++ 都这么难吗
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
ll a, b;
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cin >> a >> b;
ll l = -1e18, r = 1e18;
while (l < r)
{
ll mid = (l + r) >> 1;
if (mid - b > a)
r = mid - 1;
else
l = mid;
}
cout << l << '\n';
return 0;
}by 123456789xiao @ 2024-08-17 17:08:36
天哪2天学这么多
by ywtank @ 2024-08-18 09:25:28
复杂度达O(a+b),不超时才怪
by Baizhanbo20130828 @ 2024-08-18 14:13:05
@123456789xiao 注意TA名字的颜色
by zhaoyikuan @ 2024-08-18 14:32:51
《刚学c++两天》
by sharkbee111111 @ 2024-08-18 17:25:02
《刚学两天》
by xbqlht21 @ 2024-08-22 10:44:09
@imsbNR 把1e18改成1e9，还有这不是Dijkstra板子题吗？（
by cxoi1712 @ 2024-08-22 11:43:51
两天学《二分》
by 123456789xiao @ 2024-08-24 07:47:38
you just need:
int a,b;
cin>>a>>b;
cout<<a+b;
by Hear_the_sound_of_AC @ 2024-08-24 17:11:03
是log2 1e18
by Feynman5210 @ 2024-08-31 10:26:33
把l+r>>1改成l+r+1>>1。