【NOIP2017提高A组模拟8.22】时间机器

set模板

#include
#include
#include
#include
#include
#include
#define fo(i,a,b) for(i=a;i<=b;i++)
#define ll long long
using namespace std;
const ll inf=0x7fffffffffffffff;
int read(){
    int x=0;
    char ch=getchar();
    while (ch<'0' || ch>'9') ch=getchar();
    while (ch>='0' && ch<='9') x=x*10+ch-'0',ch=getchar();
    return x;
}
const int maxn=50005;

int i,j,k,l,n,x,y,z,t,m;
bool bz;
struct P{
    int x,y,z,w;
    bool operator <(const P &b)const{return y2],tmp;
multiset
 cs;
multiset
::iterator it;
bool cmp(P a,P b){return a.x1;}

int main(){
//  freopen("t2.in","r",stdin);
    freopen("machine.in","r",stdin);
    freopen("machine.out","w",stdout);
    t=read();
    while (t){
        t--;
        n=read(); m=read();
        l=0;
        fo(i,1,n+m){
            if (i==n+1) l=1;
            a[i].x=read(); a[i].y=read(); a[i].z=read(); a[i].w=l; 
        }
        sort(a+1,a+n+m+1,cmp);
        bz=false;
        cs.clear();
        fo(i,1,n+m)
        if (a[i].w==0){
            while (a[i].z){
                it=cs.lower_bound(a[i]);
                if (it!=cs.end()){
                    tmp=*it;
                    cs.erase(it);
                    x=min(a[i].z,tmp.z);
                    a[i].z-=x;
                    tmp.z-=x;
                    if (tmp.z) cs.insert(tmp);
                } else{
                    bz=true;
                    break;
                }
            }
            if (bz==true) break;
        } else cs.insert(a[i]);
        if (bz) printf("No\n"); else printf("Yes\n");
    }
}