智力大冲浪

传送门

同样是一道贪心题。我们能想到,肯定是要做那些扣钱最多的,所以我们先把扣钱的多少拍一下序,之后,我们一定是要把这件事情尽量拖后做的,这样才能保证尽量不影响其他的事件。而如果这个时间已经被占用,那就尽量向前排,实在排不了的丢弃即可。

看一下代码。

#include<cstdio>
#include<algorithm>
#include<cstring>
#include<iostream>
#include<cmath>
#include<set>
#include<queue>
#define rep(i,a,n) for(int i = a;i <= n;i++)
#define per(i,n,a) for(int i = n;i >= a;i--)
#define enter putchar('
')

using namespace std;
typedef long long ll;
const int M = 200005;
const int N = 1005;
const int INF = 2147483647;

int read()
{
    int ans = 0,op = 1;
    char ch = getchar();
    while(ch < '0' || ch > '9')
    {
    if(ch == '-') op = -1;
    ch = getchar();
    }
    while(ch >= '0' && ch <= '9')
    {
    ans *= 10;
    ans += ch - '0';
    ch = getchar();
    }
    return ans * op;
}

struct mission
{
    int val,tim;
    bool operator < (const mission &g) const
    {
        return val > g.val;
    }
}a[M];

int sum,n;
bool vis[M];

int main()
{
    sum = read(),n = read();
    rep(i,1,n) a[i].tim = read();
    rep(i,1,n) a[i].val = read();
    sort(a+1,a+1+n);
    rep(i,1,n)
    per(j,a[i].tim,1)
    {
        if(!vis[j])
        {
        vis[j] = 1,a[i].val = 0;
        break;
        }
    }
    rep(i,1,n) sum -= a[i].val;
    printf("%d
",sum);
    return 0;
}
    
原文地址:https://www.cnblogs.com/captain1/p/9853318.html