信息学奥赛一本通 06. 月度开销
原题链接
简单
作者:
y总的小迷弟
,
2023-10-08 20:55:05
,
所有人可见
,
阅读 64
//二分板子题
#include<bits/stdc++.h>
using namespace std;
int n, m, sum = 0, minn = 0x3f3f3f3f;
int a[100010];
bool check(int mid)
{
int tot = 0, cnt = 0;
for(int i = 1;i <= n;i++)
{
if(a[i] > mid)
return false;
if(tot + a[i] > mid)
{
cnt++;
tot = a[i];
}
else tot += a[i];
}
if(tot > 0)
cnt++;
if(cnt > m)
return false;
else
return true;
}
int main()
{
cin >> n >> m;
for(int i = 1;i <= n;i++)
{
cin >> a[i];
sum += a[i];
minn = min(minn, a[i]);
}
int l = 0, r = 1e9;
while(l < r)
{
int mid = l + r >> 1;
if(check(mid))
r = mid;
else
l = mid + 1;
}
cout << l << endl;
return 0;
}