【51NOD】消灭兔子

【算法】贪心

#include<cstdio>
#include<algorithm>
#include<cstring>
#include<queue>
using namespace std;
const int maxn=;
struct cyc{int num,value;}b[maxn];
int n,m,a[maxn];
long long ans=;
priority_queue<int,vector<int>,greater<int> >q;
bool cmp(cyc a,cyc b)
{return a.num<b.num;}
int main()
{
    scanf("%d%d",&n,&m);
    for(int i=;i<=n;i++)scanf("%d",&a[i]);
    sort(a+,a+n+);
    for(int i=;i<=m;i++)scanf("%d%d",&b[i].num,&b[i].value);
    sort(b+,b+m+,cmp);
    int now=m+;
    bool ok=;
    for(int i=n;i>=;i--)
    {
        for(int j=now-;j>=;j--)
        {
            if(b[j].num>=a[i]){now=j;q.push(b[j].value);}
            else break;
        }
        if(q.empty()){ok=;break;}
        ans+=q.top();
        q.pop();
    }
    if(!ok)printf("No Solution");
    else printf("%lld",ans);
    return ;
}