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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#554031 | #9251. Graph Changing | ucup-team1134 | RE | 0ms | 0kb | C++23 | 2.7kb | 2024-09-09 02:20:11 | 2024-09-09 02:20:12 |
answer
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return true; } return false; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return true; } return false; }
#define vi vector<int>
#define vl vector<ll>
#define vii vector<pair<int,int>>
#define vll vector<pair<ll,ll>>
#define vvi vector<vector<int>>
#define vvl vector<vector<ll>>
#define vvii vector<vector<pair<int,int>>>
#define vvll vector<vector<pair<ll,ll>>>
#define vst vector<string>
#define pb push_back
#define all(x) (x).begin(),(x).end()
#define mkunique(x) sort(all(x));(x).erase(unique(all(x)),(x).end())
#define fi first
#define se second
#define mp make_pair
#define si(x) int(x.size())
const int mod=998244353,MAX=300005,INF=15<<26;
int gutyoku(int n,int k,int t,int x,int y){
vvi E(n,vi(n,1)),dis(n,vi(n,INF));
for(int i=0;i<n;i++){
E[i][i]=0;
for(int j=0;j<n;j++){
if(i==j) dis[i][j]=0;
else dis[i][j]=abs(i-j);
}
}
cout<<"--- "<<n<<" "<<k<<" ---\n";
for(int tt=1;tt<=t+1;tt++){
if(tt-1==t){
return dis[x][y];
}
vvi nE(n,vi(n,0)),ndis(n,vi(n,INF));
for(int i=0;i<n;i++){
ndis[i][i]=0;
for(int j=0;j<n;j++){
if(dis[i][j]!=INF&&dis[i][j]>=k){
nE[i][j]=1;
ndis[i][j]=1;
}
}
}
for(int z=0;z<n;z++) for(int x=0;x<n;x++) for(int y=0;y<n;y++) chmin(ndis[x][y],ndis[x][z]+ndis[z][y]);
E=nE;
dis=ndis;
}
return -1;
}
int solve(int n,int k,int t,int x,int y){
if(x==y) return 0;
if(n<=7){
return gutyoku(n,k,t,x,y);
}
if(x>y) swap(x,y);
if(t==0){
return y-x;
}
if(k==1){
return 1;
}
if(k==2){
t%=2;
if(t==0) return y-x;
else{
if(y-x==1) return 2;
else return 1;
}
}
if(t>=2) return INF;
if(y-x>=k) return 1;
if(n-1-x>=k&&n-1-y>=k) return 2;
if(x>=k&&y>=k) return 2;
if(n-1-x>=k&&n-1>=k&&y>=k) return 3;
if(x>=k&&n-1>=k&&n-1-y>=k) return 3;
return INF;
}
int main(){
std::ifstream in("text.txt");
std::cin.rdbuf(in.rdbuf());
cin.tie(0);
ios::sync_with_stdio(false);
int Q;cin>>Q;
while(Q--){
int n,k,t,x,y;cin>>n>>k>>t>>x>>y;x--;y--;
int ans=solve(n,k,t,x,y);
if(ans==INF) ans=-1;
cout<<ans<<"\n";
}
}
Details
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Test #1:
score: 0
Runtime Error
input:
5 1 5 3 2 4 1 10 4 2 4 2 10 5 2 4 1 3 2 1 3 1 3 2 1 2