【爱奇艺2018-09-15在线笔试】库特君的面条

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题目描述

库特君的面条
时间限制:C/C++语言 1000MS;其他语言 3000MS
内存限制:C/C++语言 131072KB;其他语言 655360KB
题目描述:
库特君在吃面条!

他将面条放在了数轴上,每根面条对应数轴上的两个点a和b,他想知道在任意两根面条不重叠(端点可以重叠)的情况下最多能选出多少根面条。

1 <= n <= 100

-999 <= a

代码

C++代码

#include<algorithm>
#include<iostream>
#include<cstdio>
#include<cstring>
#include<cmath>

using namespace std;

#define process(i,a,b) for(i=a;i<=b;i++)

const int maxn = 100007;
int i, j, k, l, t, n, m, dst, r;

struct NODE{
    int a, b, c;
}a[maxn];

bool cmp(NODE x, NODE y)
{
    return x.b<y.b || x.b == y.b&&x.a<y.a;
}
int main()
{
    scanf("%d", &n);
    process(i, 1, n)scanf("%d%d", &a[i].a, &a[i].b);
    sort(a + 1, a + n + 1, cmp);
    r = a[1].b;
    process(i, 2, n)
    {
        if (a[i].a >= r){
            dst++;
            r = a[i].b;
        }
    }
    printf("%d\n", dst + 1);

    return 0;
}

Python代码

if __name__ == "__main__":
    n = int(raw_input())
    d = []
    for i in range(n):
        (a, b) = (int(i) for i in raw_input().split())
        (a, b) = (a, b) if a < b else (b, a)
        d.append((a, b))
    r = sorted(d, key=lambda x: x[1])
    previous = 0
    result = 0
    for j in range(1, n):
        if r[j][0] >= r[previous][1]:
            result += 1
            previous = j
    print(result+1)

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转载自blog.csdn.net/amusi1994/article/details/82713054
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