QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#650603 | #5668. Cell Nuclei Detection | XfJbUhpyzgaW# | AC ✓ | 967ms | 77004kb | C++14 | 2.8kb | 2024-10-18 15:48:05 | 2024-10-18 15:48:05 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=5e4+5,maxn=1e7;
struct mat{int x1,y1,x2,y2;}a[N],b[N];
int head[maxn],go[maxn],nxt[maxn],flow[maxn],dis[maxn],cur[maxn];
vector<int> mp[505][505];
int n=0,m,T,tot,St,Ed;
bool check(mat a,mat b){
int x1=max(a.x1,b.x1),x2=min(a.x2,b.x2),y1=max(a.y1,b.y1),y2=min(a.y2,b.y2);
if (x1>x2 || y1>y2) return 0;
return 2*(x2-x1)*(y2-y1)>=(a.x2-a.x1)*(a.y2-a.y1);
}
void add(int x,int y,int z){
// printf("%d %d %d\n",x,y,z);
++tot;go[tot]=y;nxt[tot]=head[x];head[x]=tot;flow[tot]=z;
++tot;go[tot]=x;nxt[tot]=head[y];head[y]=tot;flow[tot]=0;
}
vector<pair<int,int>> edge;
void link(int x,int y,int id){
for (int i:mp[x][y])
if (check(a[i],b[id]))
edge.emplace_back(i,id+n);
}
void clear(){
for (int i=0;i<=500;++i)
for (int j=0;j<=500;++j)
mp[i][j].clear();
tot=1;St=n+m+1;Ed=n+m+2;
for (int i=1;i<=n+m+2;++i) head[i]=0;
edge.clear();
}
queue<int> q;
bool bfs(){
for (int i=1;i<=n+m+2;++i) dis[i]=-1;
dis[St]=1;q.emplace(St);
while (!q.empty()){
int x=q.front();q.pop();
for (int i=head[x];i;i=nxt[i])
if (flow[i] && dis[go[i]]==-1){
dis[go[i]]=dis[x]+1;
q.emplace(go[i]);
}
}
return dis[Ed]!=-1;
}
int dfs(int x,int flw){
if (x==Ed) return flw;
int sum=0;
for (int &i=cur[x];i;i=nxt[i])
if (dis[go[i]]==dis[x]+1 && flow[i]){
int t=dfs(go[i],min(flw-sum,flow[i]));
flow[i]-=t,flow[i^1]+=t,sum+=t;
if (sum==flw) return flw;
}
return sum;
}
int dinic(){
int res=0;
while (bfs()){
for (int i=1;i<=n+m+2;++i) cur[i]=head[i];
res+=dfs(St,1e8);
// printf("%d\n",res);
}
return res;
}
void work(){
scanf("%d%d",&n,&m);
clear();
for (int i=1;i<=n;++i){
scanf("%d%d%d%d",&a[i].x1,&a[i].y1,&a[i].x2,&a[i].y2);
mp[a[i].x1/4][a[i].y1/4].emplace_back(i);
mp[a[i].x1/4][a[i].y2/4].emplace_back(i);
mp[a[i].x2/4][a[i].y1/4].emplace_back(i);
mp[a[i].x2/4][a[i].y2/4].emplace_back(i);
}
for (int i=1;i<=m;++i){
scanf("%d%d%d%d",&b[i].x1,&b[i].y1,&b[i].x2,&b[i].y2);
link(b[i].x1/4,b[i].y1/4,i);
link(b[i].x1/4,b[i].y2/4,i);
link(b[i].x2/4,b[i].y1/4,i);
link(b[i].x2/4,b[i].y2/4,i);
}
sort(edge.begin(),edge.end());
edge.erase(unique(edge.begin(),edge.end()),edge.end());
for (auto e:edge) add(e.first,e.second,1);
for (int i=1;i<=n;++i) add(St,i,1);
for (int i=1;i<=m;++i) add(i+n,Ed,1);
printf("%d\n",dinic());
}
int main(){
// freopen("a.in","r",stdin);
for (scanf("%d",&T);T;--T) work();
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 23968kb
input:
3 2 2 1 1 3 3 3 3 5 5 2 2 4 4 4 4 6 6 2 3 1 1 3 3 3 3 5 5 1 3 3 5 2 1 4 5 3 1 5 3 3 3 1 1 2 2 2 2 3 3 3 3 4 4 1 1 3 3 2 2 4 4 3 3 5 5
output:
0 1 3
result:
ok 3 lines
Test #2:
score: 0
Accepted
time: 0ms
memory: 23612kb
input:
3 2 2 1 1 3 3 3 3 5 5 2 2 4 4 4 4 6 6 2 3 1 1 3 3 3 3 5 5 1 3 3 5 2 1 4 5 3 1 5 3 3 3 1 1 2 2 2 2 3 3 3 3 4 4 1 1 3 3 2 2 4 4 3 3 5 5
output:
0 1 3
result:
ok 3 lines
Test #3:
score: 0
Accepted
time: 288ms
memory: 63300kb
input:
5 50000 50000 0 0 4 4 4 0 8 4 8 0 12 4 12 0 16 4 16 0 20 4 20 0 24 4 24 0 28 4 28 0 32 4 32 0 36 4 36 0 40 4 40 0 44 4 44 0 48 4 48 0 52 4 52 0 56 4 56 0 60 4 60 0 64 4 64 0 68 4 68 0 72 4 72 0 76 4 76 0 80 4 80 0 84 4 84 0 88 4 88 0 92 4 92 0 96 4 96 0 100 4 100 0 104 4 104 0 108 4 108 0 112 4 112 ...
output:
50000 50000 0 50000 3150
result:
ok 5 lines
Test #4:
score: 0
Accepted
time: 317ms
memory: 74868kb
input:
5 50000 50000 0 0 1 1 1 0 2 1 2 0 3 1 3 0 4 1 4 0 5 1 5 0 6 1 6 0 7 1 7 0 8 1 8 0 9 1 9 0 10 1 10 0 11 1 11 0 12 1 12 0 13 1 13 0 14 1 14 0 15 1 15 0 16 1 16 0 17 1 17 0 18 1 18 0 19 1 19 0 20 1 20 0 21 1 21 0 22 1 22 0 23 1 23 0 24 1 24 0 25 1 25 0 26 1 26 0 27 1 27 0 28 1 28 0 29 1 29 0 30 1 30 0 ...
output:
50000 25050 12500 16000 8000
result:
ok 5 lines
Test #5:
score: 0
Accepted
time: 122ms
memory: 35624kb
input:
5 50000 50000 0 0 2 4 4 0 7 1 8 0 10 1 12 0 15 3 16 0 19 1 20 0 22 2 24 0 26 4 28 0 30 4 32 0 36 3 36 0 40 1 40 0 44 1 44 0 47 2 48 0 49 3 52 0 54 1 56 0 59 4 60 0 64 3 64 0 68 3 68 0 70 1 72 0 76 4 76 0 80 3 80 0 84 4 84 0 87 2 88 0 90 1 92 0 94 4 96 0 98 1 100 0 104 1 104 0 107 2 108 0 110 4 112 0...
output:
10594 10779 10618 10381 10779
result:
ok 5 lines
Test #6:
score: 0
Accepted
time: 967ms
memory: 77004kb
input:
5 50000 50000 0 0 4 4 1 0 5 4 2 0 6 4 3 0 7 4 4 0 8 4 5 0 9 4 6 0 10 4 7 0 11 4 8 0 12 4 9 0 13 4 10 0 14 4 11 0 15 4 12 0 16 4 13 0 17 4 14 0 18 4 15 0 19 4 16 0 20 4 17 0 21 4 18 0 22 4 19 0 23 4 20 0 24 4 21 0 25 4 22 0 26 4 23 0 27 4 24 0 28 4 25 0 29 4 26 0 30 4 27 0 31 4 28 0 32 4 29 0 33 4 30...
output:
50000 50000 50000 50000 49600
result:
ok 5 lines
Test #7:
score: 0
Accepted
time: 4ms
memory: 20756kb
input:
1 4 4 1 1 3 3 2 1 4 3 1 2 3 4 2 2 4 4 2 1 4 3 3 2 5 4 1 2 3 4 2 3 4 5
output:
3
result:
ok single line: '3'