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ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#785368 | #9810. Obliviate, Then Reincarnate | c201904 | WA | 577ms | 71180kb | C++14 | 2.7kb | 2024-11-26 17:40:15 | 2024-11-26 17:40:25 |
Judging History
This is the latest submission verdict.
- [2024-11-26 23:19:26]
- hack成功,自动添加数据
- (/hack/1260)
- [2024-11-26 17:40:15]
- Submitted
answer
//This program need not to be initialized(Write this for all programs)
#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int N=5e5+5;
int n,m,q;//number of floors,relocation instructions(edges),queries
int flr=0;//number of floors that appear
map<int,int>h;//mapping
struct node{
int v;
ll d;
};
vector<node>e[N];//edges
vector<int>e_opp[N];
void addedge(int x,int d){//x floor add d
if(!d)return ;
x=(x%n+n)%n;
int y=x+d;y=(y%n+n)%n;
// cout<<x<<" "<<y<<" || ";
if(!h[x])h[x]=++flr;x=h[x];
if(!h[y])h[y]=++flr;y=h[y];
// cout<<x<<" "<<y<<endl;
//cout<<x<<" "<<y<<" "<<d<<endl;
e[x].push_back((node){y,d});
e_opp[y].push_back(x);
//if(x==y)tag[x]=1;
return ;
}
int pts=0;//
int low[N],dfn[N],top[N],tops;
vector<int>scc[N];//strong connected component
int vis[N];
ll pe[N];//potential energy;
void dfs(int u,int tp){//tp means top
vis[u]=1;
for(int i=0;i<e[u].size();i++){
int v=e[u][i].v;
if(vis[v])continue;
if(top[v]!=tp)continue;
pe[v]=pe[u]+e[u][i].d;
}
return ;
}
int judge(int tp){//only consider pts in the scc
dfs(scc[tp][0],tp);
int sz=scc[tp].size();
for(int i=0;i<sz;i++){
int u=scc[tp][i];
for(int j=0;j<e[u].size();j++){
int v=e[u][j].v;;
if(top[v]!=tp)continue;
int d=e[u][j].d;
if(pe[v]!=(pe[u]+d))return 1;
}
}
return 0;
}
stack<int>st;
int tag[N];//is it in a non-zero scc?
void tarjan(int u){
st.push(u);
low[u]=dfn[u]=++pts;top[u]=0;//initialize
for(int i=0;i<e[u].size();i++){
int v=e[u][i].v;
if(!dfn[v]){
tarjan(v);
low[u]=min(low[u],low[v]);
//there suppose to be if !top[v],but this doesn't change the result
}
else if(!top[v]){//!top[v] means that v is in stack
low[u]=min(low[u],dfn[v]);//why ?
}
}
if(low[u]==dfn[u]){
top[u]=++tops;
scc[tops].push_back(u);
while(st.top()!=u){
int x=st.top();st.pop();
top[x]=tops;
scc[tops].push_back(x);
}
st.pop();
if(judge(tops)){
//cout<<u<<" "<<scc[tops].size()<<endl;
for(int i=0;i<scc[tops].size();i++){
int x=scc[tops][i];
tag[x]=1;//try not to use too long sentences.
}
}
}
}
void run_opp(int u){
//if(tag[u])return ; (initial points should not be deleted)
for(int i=0;i<e_opp[u].size();i++){
int v=e_opp[u][i];
if(tag[v])return ;
tag[v]=1;
run_opp(v);
}
}
int main(){
scanf("%d%d%d",&n,&m,&q);
int a,b;
for(int i=1;i<=m;i++){
scanf("%d%d",&a,&b);
addedge(a,b);
}
for(int i=1;i<=flr;i++){
if(!low[i])tarjan(i);
}
for(int i=1;i<=flr;i++){
if(tag[i])run_opp(i);
}
while(q--){
int x;
scanf("%d",&x);
x=(x%n+n)%n;
if(tag[h[x]])puts("Yes");
else puts("No");
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 4ms
memory: 46704kb
input:
3 2 3 1 1 -1 3 1 2 3
output:
Yes Yes No
result:
ok 3 tokens
Test #2:
score: 0
Accepted
time: 3ms
memory: 47532kb
input:
3 2 3 1 1 -1 0 1 2 3
output:
No No No
result:
ok 3 tokens
Test #3:
score: 0
Accepted
time: 0ms
memory: 48080kb
input:
1 1 1 0 1000000000 -1000000000
output:
Yes
result:
ok "Yes"
Test #4:
score: 0
Accepted
time: 3ms
memory: 47964kb
input:
3 2 3 0 1000000000 1 -1000000000 -1000000000 0 -1000000000
output:
No No No
result:
ok 3 tokens
Test #5:
score: -100
Wrong Answer
time: 577ms
memory: 71180kb
input:
50134 500000 500000 -154428638 -283522863 -186373509 -327130969 154999046 46750274 -933523447 349415487 -437683609 140099255 864996699 -262318199 811293034 -264299324 120273173 52410685 874944410 -52048424 445049930 -803690605 -138111276 -104634331 720288580 126597671 471164416 -348777147 -356502322...
output:
Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes ...
result:
wrong answer 1st words differ - expected: 'No', found: 'Yes'