mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
#include<iostream>
|
|
#include<cstdio>
|
|
#include<cstring>
|
|
using namespace std;
|
|
#define MAXM 555555
|
|
#define MAXN 2222
|
|
struct Edge{
|
|
int v,cap,next;
|
|
}edge[MAXM];
|
|
int pre[MAXN];
|
|
int cur[MAXN];
|
|
int head[MAXN];
|
|
int level[MAXN];
|
|
int gap[MAXN];
|
|
int n,m;
|
|
int NV,NE;
|
|
int SAP(int vs,int vt){
|
|
memset(pre,-1,sizeof(pre));
|
|
memset(level,0,sizeof(level));
|
|
memset(gap,0,sizeof(gap));
|
|
for(int i=0;i<=NV;i++)cur[i]=head[i];
|
|
int u=pre[vs]=vs,maxflow=0,aug=-1;
|
|
gap[0]=NV;
|
|
while(level[vs]<NV){
|
|
loop:
|
|
for(int &i=cur[u];i!=-1;i=edge[i].next){
|
|
int v=edge[i].v;
|
|
if(edge[i].cap&&level[u]==level[v]+1){
|
|
aug==-1?aug=edge[i].cap:(aug=min(aug,edge[i].cap));
|
|
pre[v]=u;
|
|
u=v;
|
|
if(v==vt){
|
|
maxflow+=aug;
|
|
for(u=pre[u];v!=vs;v=u,u=pre[u]){
|
|
edge[cur[u]].cap-=aug;
|
|
edge[cur[u]^1].cap+=aug;
|
|
}
|
|
aug=-1;
|
|
}
|
|
goto loop;
|
|
}
|
|
}
|
|
int minlevel=NV;
|
|
for(int i=head[u];i!=-1;i=edge[i].next){
|
|
int v=edge[i].v;
|
|
if(edge[i].cap&&minlevel>level[v]){
|
|
cur[u]=i;
|
|
minlevel=level[v];
|
|
}
|
|
}
|
|
gap[level[u]]--;
|
|
if(gap[level[u]]==0)break;
|
|
level[u]=minlevel+1;
|
|
gap[level[u]]++;
|
|
u=pre[u];
|
|
}
|
|
return maxflow;
|
|
}
|
|
void Insert(int u,int v,int cap,int cc=0){
|
|
edge[NE].cap=cap;edge[NE].v=v;
|
|
edge[NE].next=head[u];head[u]=NE++;
|
|
edge[NE].cap=cc;edge[NE].v=u;
|
|
edge[NE].next=head[v];head[v]=NE++;
|
|
}
|
|
int main(){
|
|
int _case,t=1,vs,vt,st,ed,p,dmax,sum;
|
|
scanf("%d",&_case);
|
|
while(_case--){
|
|
scanf("%d%d",&n,&m);
|
|
memset(head,-1,sizeof(head));
|
|
NE=0,dmax=0,vs=0,sum=0;
|
|
for(int i=1;i<=n;i++){
|
|
scanf("%d%d%d",&p,&st,&ed);
|
|
dmax=max(dmax,ed);
|
|
sum+=p;
|
|
Insert(vs,i,p);
|
|
for(int j=st;j<=ed;j++){
|
|
Insert(i,n+j,1);
|
|
}
|
|
}
|
|
vt=n+dmax+1;
|
|
for(int i=1;i<=dmax;i++){
|
|
Insert(n+i,vt,m);
|
|
}
|
|
NV=vt+1;
|
|
printf("Case %d: ",t++);
|
|
if(sum==SAP(vs,vt)){
|
|
puts("Yes");
|
|
}else
|
|
puts("No");
|
|
puts("");
|
|
}
|
|
return 0;
|
|
}
|