| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 916607 | winter0101 | Two Transportations (JOI19_transportations) | C++17 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
#define all(fl) fl.begin(),fl.end()
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define lb lower_bound
#define ub upper_bound
#define sz(a) (int)a.size()
#define pii pair<int,int>
#define pli pair<long long,int>
#define gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
namespace {
int N;
int reada=0,hra=0,nra=0,vertice=0,value=0,lst=0,dem=0,va=0;
} // namespace
const int maxn=2e3+9;
const int inf=5e7;
vector<pii>a[maxn];
int d[maxn];
bool vis[maxn];
void dit(){
int diff=value-lst;
for1(i,0,8){
SendA(diff>>i&1);
}
reada=0;
hra=0;
nra=9;
}
void update(){
if (dem==N)return;
int nw=-1;
for1(i,0,N-1){
if (vis[i])continue;
if (nw==-1)nw=i;
if (d[nw]>d[i])nw=i;
}
reada=0;
hra=0;
nra=0;
vertice=nw,value=d[nw];
if (value==inf)value=lst+(1<<9)-1;
dem++;
dit();
}
void InitA(int N, int A, std::vector<int> U, std::vector<int> V,std::vector<int> C) {
::N=N;
for1(i,0,N-1){
d[i]=inf;
}
for1(i,0,A-1){
a[U[i]].pb({V[i],C[i]}),a[V[i]].pb({U[i],C[i]});
}
d[0]=0;
update();
}
void ReceiveA(bool x) {
reada|=(x<<hra);
hra++;
if (hra==nra){
if (hra==9){
if (reada<value-lst){//need read vertice of b
va=reada;
reada=0;
hra=0;
nra=11;
}
else {//don't need
nra=0;
hra=0;
for1(i,0,10)SendA(vertice>>i&1);
vis[vertice]=1;
lst=d[vertice];
for (auto v:a[vertice]){
if (d[vertice]+v.se<d[v.fi]){
d[v.fi]=d[vertice]+v.se;
}
}
update();
return;
}
}
else {
//cerr<<vertice<<" "<<reada<<" "<<va<<" "<<lst<<'\n';
d[reada]=va+lst;
vertice=reada;
vis[vertice]=1;
lst=d[vertice];
for (auto v:a[vertice]){
if (d[vertice]+v.se<d[v.fi]){
d[v.fi]=d[vertice]+v.se;
}
}
reada=0;
nra=0;
hra=0;
update();
return;
}
}
}
std::vector<int> Answer() {
std::vector<int> ans(N);
for (int k = 0; k < N; ++k) {
ans[k] = d[k];
}
return ans;
}
#include<bits/stdc++.h>
using namespace std;
#define all(fl) fl.begin(),fl.end()
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define lb lower_bound
#define ub upper_bound
#define sz(a) (int)a.size()
#define pii pair<int,int>
#define pli pair<long long,int>
#define gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
const int maxn=2e3+9;
const int inf=5e6+9;
namespace {
int n;
int readb=0,hrb=0,nrb=0,ver=0,vl=0,last=0,vb=0,demb=0;
} // namespace
vector<pii>g[maxn];
int dis[maxn];
bool visit[maxn];
void du(){
int diff=vl-last;
//cerr<<diff<<'\n';
for1(i,0,8){
SendB(diff>>i&1);
}
}
void add(){
if (demb==n)return;
demb++;
int nw=-1;
for1(i,0,n-1){
if (visit[i])continue;
if (nw==-1)nw=i;
if (dis[nw]>dis[i])nw=i;
}
ver=nw;
vl=dis[nw];
if (vl==inf)vl=last+(1<<9)-1;
//if (ver==2)cout<<vl<<" "<<last<<'\n';
}
void InitB(int N, int B, std::vector<int> S, std::vector<int> T,std::vector<int> D) {
n=N;
for1(i,0,n-1)dis[i]=inf;
for1(i,0,B-1){
g[S[i]].pb({T[i],D[i]});
g[T[i]].pb({S[i],D[i]});
}
dis[0]=0;
readb=0;
nrb=9;
hrb=0;
}
void ReceiveB(bool y) {
readb|=(y<<hrb);
hrb++;
if (hrb==nrb){
if (nrb==9){
add();
//cerr<<readb<<'\n';
du();
if (readb<=vl-last){
vb=readb;
readb=0;
nrb=11;
hrb=0;
}
else {
for1(i,0,10)SendB(ver>>i&1);
//cerr<<ver<<" "<<dis[ver]<<'\n';
visit[ver]=1;
last=dis[ver];
for (auto v:g[ver]){
if (dis[v.fi]>dis[ver]+v.se){
dis[v.fi]=dis[ver]+v.se;
}
}
readb=0;
nrb=9;
hrb=0;
return;
}
}
else {
//cerr<<readb<<'\n';
dis[readb]=vb+last;
ver=readb;
last=dis[ver];
visit[ver]=1;
for (auto v:g[ver]){
if (dis[v.fi]>dis[ver]+v.se){
dis[v.fi]=dis[ver]+v.se;
}
}
readb=0;
nrb=9;
hrb=0;
return;
}
}
}