题目地址:POJ 3273
水题。居然错了两次,sad、、
代码如下:
#include <iostream>
#include <string.h>
#include <math.h>
#include <queue>
#include <algorithm>
#include <stdlib.h>
#include <map>
#include <set>
#include <stdio.h>
using namespace std;
#define LL __int64
#define pi acos(-1.0)
const int mod=9901;
const int INF=0x3f3f3f3f;
const double eqs=1e-8;
int a[110000];
int main()
{
int n, m, i, cnt, sum;
while(scanf("%d%d",&n,&m)!=EOF) {
for(i=0; i<n; i++) {
scanf("%d",&a[i]);
}
int low=0, high=1e9, mid, ans;
while(low<=high) {
mid=low+high>>1;
cnt=1;
sum=0;
for(i=0; i<n; i++) {
if(a[i]>mid) {
cnt=m+1;
break;
}
if(sum+a[i]>mid) {
sum=a[i];
cnt++;
} else sum+=a[i];
if(cnt>m) break;
}
if(cnt<=m) {
ans=mid;
high=mid-1;
} else low=mid+1;
}
printf("%d\n",ans);
}
return 0;
}