oj.uz

Submission #893368

# Submission time Handle Problem Language Result Execution time Memory
893368 2023-12-27T03:32:22 Z karrigan Airplane (NOI23_airplane) C++14
0 / 100
 55 ms 17616 KB 
#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)
#define lastbit(i) __builtin_ctz(i)
#define pil pair<int,long long>
const int maxn=2e5+9;
const long long inf=1e15;
long long b[maxn];
vector<int>a[maxn];
int n;
struct cus{
int u;
long long val;
bool operator < (const cus &p)const {
return val>p.val;
}
};
vector<long long> cal(int s){
vector<long long>f(n+1);
vector<bool>vis(n+1);
for1(i,1,n)f[i]=inf;
f[s]=0;
priority_queue<cus>t;
t.push({s,0});
while (!t.empty()){
    auto u=t.top();
    t.pop();
    if (vis[u.u])continue;
    vis[u.u]=1;
    for (auto v:a[u.u]){
    if (f[v]>max(b[v],f[u.u]+1)){
    f[v]=max(b[v],f[u.u]+1);
    t.push({v,f[v]});
    }
    }
}
return f;
}
long long ans[maxn];
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen("temp.INP","r",stdin);
    //freopen("temp.OUT","w",stdout);
    int m;
    cin>>n>>m;
    for1(i,1,n)cin>>b[i];
    for1(i,1,m){
    int u,v;
    cin>>u>>v;
    a[u].pb(v);
    a[v].pb(u);
    }
    vector<long long>tmp=cal(1);
    for1(i,1,n){
    ans[i]+=tmp[i];
    //cout<<i<<" "<<tmp[i]<<'\n';
    }
    tmp=cal(n);
    for1(i,1,n){
    ans[i]+=tmp[i];
    //cout<<i<<" "<<tmp[i]<<'\n';
    }
    long long vcl=inf;
    for1(i,2,n-1)vcl=min(vcl,ans[i]);
    cout<<vcl;
}

Subtask #1
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Incorrect 55 ms 17616 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Incorrect 1 ms 6492 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Incorrect 1 ms 6492 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Incorrect 55 ms 17616 KB Output isn't correct
3 Halted 0 ms 0 KB -