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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#470511 | #5504. Flower Garden | yhddd | RE | 15ms | 83884kb | C++14 | 4.0kb | 2024-07-10 14:43:00 | 2024-07-10 14:43:00 |
Judging History
answer
#include<bits/stdc++.h>
#define int long long
#define mod 998244353ll
#define pii pair<int,int>
#define fi first
#define se second
#define mems(x,y) memset(x,y,sizeof(x))
using namespace std;
const int maxn=1000010;
const int inf=1e18;
inline int read(){
int x=0,f=1;
char ch=getchar();
while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
while(ch>='0'&&ch<='9'){x=(x<<3)+(x<<1)+(ch-48);ch=getchar();}
return x*f;
}
bool Mbe;
int n,m;
int head[maxn],tot;
struct nd{
int nxt,to;
}e[maxn];
void add(int u,int v){e[++tot]={head[u],v};head[u]=tot;}
#define mid (l+r>>1)
#define ls nd<<1
#define rs nd<<1|1
int in[maxn<<2],out[maxn<<2],idx;
void build(int nd,int l,int r){
in[nd]=++idx;out[nd]=++idx;
if(l==r){
add(in[nd],l),add(l,out[nd]);
return ;
}
build(ls,l,mid),build(rs,mid+1,r);
add(in[nd],in[ls]),add(in[nd],in[rs]),add(out[ls],out[nd]),add(out[rs],out[nd]);
}
void updin(int nd,int l,int r,int ql,int qr,int id){
if(l>=ql&&r<=qr)return add(id,in[nd]);
if(ql<=mid)updin(ls,l,mid,ql,qr,id);
if(qr>mid)updin(rs,mid+1,r,ql,qr,id);
}
void updout(int nd,int l,int r,int ql,int qr,int id){
if(l>=ql&&r<=qr)return add(out[nd],id);
if(ql<=mid)updout(ls,l,mid,ql,qr,id);
if(qr>mid)updout(rs,mid+1,r,ql,qr,id);
}
int dfn[maxn],lw[maxn],cnt;
int scc[maxn],scct;
int st[maxn],tp;
vector<int> id[maxn];
void tar(int u){
lw[u]=dfn[u]=++cnt;st[++tp]=u;
for(int i=head[u];i;i=e[i].nxt){
int v=e[i].to;
if(!dfn[v]){
tar(v);
lw[u]=min(lw[u],lw[v]);
}
else if(!scc[v])lw[u]=min(lw[u],dfn[v]);
}
if(dfn[u]==lw[u]){
++scct;
scc[st[tp]]=scct;
if(st[tp]<=3*n)id[scct].push_back(st[tp]);
while(st[tp--]!=u){
scc[st[tp]]=scct;
if(st[tp]<=3*n)id[scct].push_back(st[tp]);
}
}
}
vector<int> g[maxn],gg[maxn];int d[maxn];
queue<int> q;
bool ans[maxn];
map<pii,bool> bk;
int sum[maxn];
void dfs(int u){
for(int i:id[u])ans[i]=1;
for(int v:g[u])dfs(v);
}
void work(){
n=read();m=read();idx=3*n;
build(1,1,3*n);
while(m--){
int a=read(),b=read(),c=read(),d=read();++idx;
updin(1,1,3*n,c,d,idx),updout(1,1,3*n,a,b,idx);
}
for(int i=1;i<=idx;i++)if(!dfn[i])tar(i);
for(int u=1;u<=idx;u++){
for(int i=head[u];i;i=e[i].nxt){
int v=e[i].to;
if(scc[u]!=scc[v]&&!bk[{scc[u],scc[v]}]){
// cout<<scc[u]<<" "<<scc[v]<<"\n";
g[scc[u]].push_back(scc[v]),gg[scc[v]].push_back(scc[u]),d[scc[u]]++;
bk[{scc[u],scc[v]}]=bk[{scc[v],scc[u]}]=1;
}
}
}
bool fl=0;for(int i=1;i<=scct;i++)if(id[i].size()>n)fl=1;
if(!fl){
for(int i=1;i<=scct;i++)if(!d[i])q.push(i);
int ss=0;
while(!q.empty()){
int u=q.front();q.pop();ss+=id[u].size();
// cout<<u<<" "<<ss<<"\n";
for(int i:id[u])ans[i]=1;
if(ss>=n)break;
for(int v:gg[u]){
if(!d[v])continue;
d[v]--;if(!d[v])q.push(v);
}
}
while(!q.empty())q.pop();
puts("TAK");
for(int i=1;i<=3*n;i++){if(ans[i])printf("F");else printf("R");}printf("\n");
}
else{
for(int i=1;i<=scct;i++)if(!d[i])q.push(i);
while(!q.empty()){
int u=q.front();q.pop();sum[u]+=id[u].size();
for(int v:gg[u]){
if(!d[v])continue;
d[v]--;sum[v]+=sum[u];if(!d[v])q.push(v);
}
}
bool fl=0;
for(int u=1;u<=scct;u++)if(id[u].size()>n){
if(sum[u]<=2*n){
dfs(u);fl=1;
break;
}
int ss=0;for(int v:g[u])ss+=sum[v];
if(ss>=n){
for(int v:g[u])dfs(v);fl=1;
break;
}
}
if(!fl)puts("NIE");
else{
puts("TAK");
for(int i=1;i<=3*n;i++){if(ans[i])printf("F");else printf("R");}printf("\n");
}
}
for(int i=1;i<=idx;i++)head[i]=dfn[i]=scc[i]=0;tot=0;
for(int i=1;i<=scct;i++)g[i].clear(),gg[i].clear(),id[i].clear(),sum[i]=0;
bk.clear();idx=scct=cnt=tp=0;
for(int i=1;i<=3*n;i++)ans[i]=d[i]=0;
}
// \
444
bool Med;
int T;
signed main(){
// freopen(".in","r",stdin);
// freopen(".out","w",stdout);
// ios::sync_with_stdio(0);
// cin.tie(0);cout.tie(0);
// cerr<<(&Mbe-&Med)/1048576.0<<" MB\n";
T=read();
while(T--)work();
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 15ms
memory: 83884kb
input:
2 1 3 1 1 2 2 1 2 3 3 1 1 3 3 1 3 1 1 2 2 2 2 3 3 3 3 1 1
output:
TAK RRF NIE
result:
ok good!
Test #2:
score: -100
Runtime Error
input:
10 33333 100000 28701 40192 93418 95143 95902 97908 78378 78461 36823 44196 22268 23996 23977 24786 33315 48829 83965 90411 4923 8445 20235 21177 32543 47454 29598 35414 72477 73049 2014 12632 42163 46466 64305 65518 98825 99552 32331 41625 92772 96224 26500 54122 76990 77126 18249 20335 31165 36080...