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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#865410 | #6846. Wiring Engineering | 2020zym | WA | 21ms | 20508kb | C++14 | 4.2kb | 2025-01-21 18:05:20 | 2025-01-21 18:05:20 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
int n,Q,A1[310],A2[310],w[310][310],tot,h1[500010],h2[500010],vis[500010],cnt1,cnt2,fl,deg[500010],bian[500010];
int f[310][310],g[310][310],H[310][310];
long long dis1[500010],dis2[500010],Ans[100010];
struct node2{int s,t,w;}a1[10000010],a2[10000010];
void add1(int x,int y,int v){a1[++cnt1].s=h1[x],a1[cnt1].t=y,a1[cnt1].w=v,h1[x]=cnt1;}
void add2(int x,int y,int v){a2[++cnt2].s=h2[x],a2[cnt2].t=y,a2[cnt2].w=v,h2[x]=cnt2;}
void Add(int x,int y,int v){
if(!x||!y)return;
add1(x,y,v),add2(y,x,v);
}
struct node{int l1,r1,l2,r2,pos;};
void dfs1(int x){
dis1[x]=-1e18,bian[x]=1;
for(int i=h1[x];i;i=a1[i].s)
if(vis[a1[i].t]){
deg[a1[i].t]++;
if(!bian[a1[i].t])
dfs1(a1[i].t);
}
}
void dfs2(int x){
dis2[x]=-1e18,bian[x]=1;
for(int i=h2[x];i;i=a2[i].s){
if(vis[a2[i].t]){
deg[a2[i].t]++;
if(!bian[a2[i].t])
dfs2(a2[i].t);
}
}
}
queue<int>q;
void work1(int st){
dfs1(st),q.push(st);
dis1[st]=0;
while(!q.empty()){
int x=q.front();
q.pop(),bian[x]=0;
for(int i=h1[x];i;i=a1[i].s)
if(vis[a1[i].t]){
deg[a1[i].t]--;
dis1[a1[i].t]=max(dis1[a1[i].t],dis1[x]+a1[i].w);
if(deg[a1[i].t]==0)q.push(a1[i].t);
}
}
}
void work2(int st){
dfs2(st);
q.push(st);
dis2[st]=0;
while(!q.empty()){
int x=q.front();
q.pop(),bian[x]=0;
for(int i=h2[x];i;i=a2[i].s)
if(vis[a2[i].t]){
deg[a2[i].t]--;
dis2[a2[i].t]=max(dis2[a2[i].t],dis2[x]+a2[i].w);
if(deg[a2[i].t]==0)q.push(a2[i].t);
}
}
}
void solve(int l1,int r1,int l2,int r2,vector<node>z){
if((int)z.size()==0)return;
if(l1==r1){
for(node i:z){
long long op=-A1[l1];
for(int j=i.l2;j<=i.r2;j++)op+=max(0,w[l1][j]-A2[j]);
Ans[i.pos]=max(Ans[i.pos],op);
}
return;
}
if(l2==r2){
for(node i:z){
long long op=-A2[l2];
for(int j=i.l1;j<=i.r1;j++)op+=max(0,w[j][l2]-A1[j]);
Ans[i.pos]=max(Ans[i.pos],op);
}
return;
}
vector<node>z1,z2,z3,z4,z5,z6;
int mid1=(l1+r1)>>1,mid2=(l2+r2)>>1;
for(node i:z){
if(i.l1<=mid1&&mid1+1<=i.r1)z5.push_back(i);
else if(i.l2<=mid2&&mid2+1<=i.r2)z6.push_back(i);
else{
if(i.r1<=mid1&&i.r2<=mid2)z1.push_back(i);
if(i.r1<=mid1&&i.l2>mid2)z2.push_back(i);
if(i.l1>mid1&&i.r2<=mid2)z3.push_back(i);
if(i.l1>mid1&&i.r2>mid2)z4.push_back(i);
}
}
for(int i=l1;i<=r1+1;i++)
for(int j=l2;j<=r2+1;j++)vis[f[i][j]]=vis[g[i][j]]=vis[H[i][j]]=1;
if((int)z5.size()>0){
for(int i=l2;i<=r2;i++){
int d=H[mid1][i];
work1(d);
work2(d);
for(node j:z5){
Ans[j.pos]=max(Ans[j.pos],dis2[f[j.l1][j.l2]]+dis1[f[j.r1+1][j.r2+1]]);
}
}
}
if((int)z6.size()>0){
for(int i=l1;i<=r1;i++){
int d=g[i][mid2];
work1(d),work2(d);
for(node j:z6)Ans[j.pos]=max(Ans[j.pos],dis2[f[j.l1][j.l2]]+dis1[f[j.r1+1][j.r2+1]]);
}
}
for(int i=l1;i<=r1+1;i++)
for(int j=l2;j<=r2+1;j++)vis[f[i][j]]=vis[g[i][j]]=vis[H[i][j]]=0;
solve(l1,mid1,l2,mid2,z1);
solve(l1,mid1,mid2+1,r2,z2);
solve(mid1+1,r1,l2,mid2,z3);
solve(mid1+1,r1,mid2+1,r2,z4);
vector<node>().swap(z1);
vector<node>().swap(z2);
vector<node>().swap(z3);
vector<node>().swap(z4);
vector<node>().swap(z5);
vector<node>().swap(z6);
}
int main(){
// freopen("tower.in","r",stdin);
// freopen("tower.out","w",stdout);
scanf("%d%d",&n,&Q);
for(int i=1;i<=n;i++)scanf("%d",&A1[i]);
for(int i=1;i<=n;i++)scanf("%d",&A2[i]);
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)scanf("%d",&w[i][j]);
for(int i=1;i<=n+1;i++)
for(int j=1;j<=n+1;j++)
f[i][j]=++tot,g[i][j]=++tot,H[i][j]=++tot;
for(int i=1;i<=n+1;i++){
for(int j=1;j<=n+1;j++){
Add(f[i-1][j],f[i][j],0);
Add(f[i][j-1],f[i][j],0);
Add(g[i-1][j],f[i][j],0);
Add(H[i][j-1],f[i][j],0);
if(i<=n){
Add(f[i][j],g[i][j],-A1[i]);
Add(g[i][j-1],g[i][j],max(w[i][j-1]-A2[j-1],0));
Add(H[i][j-1],g[i][j],w[i][j-1]-A1[i]);
}
if(j<=n){
Add(f[i][j],H[i][j],-A2[j]);
Add(H[i-1][j],H[i][j],max(w[i-1][j]-A1[i-1],0));
Add(g[i-1][j],H[i][j],w[i-1][j]-A2[j]);
}
}
}
vector<node>z;
for(int i=1;i<=Q;i++){
int l1,r1,l2,r2;
scanf("%d%d%d%d",&l1,&r1,&l2,&r2);
z.push_back((node){l1,r1,l2,r2,i});
}
solve(1,n,1,n,z);
for(int i=1;i<=Q;i++)printf("%lld\n",Ans[i]);
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 14172kb
input:
3 4 1 2 1 2 1 2 1 2 3 4 5 6 3 2 1 1 3 1 3 2 3 1 2 1 1 2 3 1 2 2 3
output:
8 5 1 7
result:
ok 4 lines
Test #2:
score: -100
Wrong Answer
time: 21ms
memory: 20508kb
input:
24 90000 8793 8115 9643 2814 6394 7070 3822 4788 6737 6506 2901 4772 5347 5050 3493 2803 584 2544 3834 678 9891 2958 5475 522 9057 3674 3163 6433 5937 8480 4815 1201 5509 1303 4151 8190 6229 9339 9765 3011 2256 3682 8442 3641 2268 5609 4948 9632 5872 4006 7690 2611 5381 6184 9483 8527 8248 960 8124 ...
output:
0 0 0 5369 5369 5369 36650 43976 46715 46715 50688 50688 109829 109829 109829 115765 119300 120952 122216 128460 128460 128460 128526 128526 0 0 5369 5369 5369 36650 43976 46715 46715 50688 50688 109829 109829 109829 115765 119300 120952 122216 128460 128460 128460 128526 128526 0 1713 1713 1713 315...
result:
wrong answer 4th lines differ - expected: '0', found: '5369'