oj.uz

Submission #317231

# Submission time Handle Problem Language Result Execution time Memory
317231 2020-10-29T06:48:46 Z zaneyu Dreaming (IOI13_dreaming) C++14
18 / 100
 76 ms 8576 KB 
/*input
12 8 2
0 8 4
8 2 2
2 7 4
5 11 3
5 1 7
1 3 1
1 9 5
10 6 3
*/
#include "dreaming.h"
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
 
#pragma GCC optimize("unroll-loops,no-stack-protector")
//order_of_key #of elements less than x
// find_by_order kth element
#define ll long long 
#define ld long double
#define pii pair<int,int>
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
#define f first
#define s second
#define pb push_back
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define FILL(n,x) memset(n,x,sizeof(n))
#define ALL(_a) _a.begin(),_a.end()
#define sz(x) (int)x.size()
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()), c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
#define MP make_pair
const ll INF64=4e12;
const int INF=0x3f3f3f3f;
const ll MOD=1e9+7;
const ld PI=acos(-1);
const ld eps=1e-9;
#define lowb(x) x&(-x)
#define MNTO(x,y) x=min(x,(__typeof__(x))y)
#define MXTO(x,y) x=max(x,(__typeof__(x))y)
ll mult(ll a,ll b){
    return ((a%MOD)*(b%MOD))%MOD;
}
ll mypow(ll a,ll b){
    if(b<=0) return 1;
    ll res=1LL;
    while(b){
        if(b&1){
            res=(res*a)%MOD;
        }
        a=(a*a)%MOD;
        b>>=1;
    }
    return res;
}
const ll maxn=1e5+5;
const ll maxlg=__lg(maxn)+2;
vector<pii> v[maxn];
bool vis[maxn];
int bfs(int u,int dist[]){
    queue<int> q;
    q.push(u);
    dist[u]=0;
    int lst=-1;
    while(!q.empty()){
        int z=q.front();
        q.pop();
        lst=z;
        for(auto x:v[z]){
            if(dist[x.f]>dist[z]+x.s){
                dist[x.f]=dist[z]+x.s;
                q.push(x.f);
            }
        }
    }
    return lst;
}
int bfs(int u,int dist[],vector<int> &ppl){
    queue<int> q;
    q.push(u);
    dist[u]=0;
    int lst=-1;
    while(!q.empty()){
        int z=q.front();
        q.pop();
        ppl.pb(z);
        lst=z;
        for(auto x:v[z]){
            if(dist[x.f]>dist[z]+x.s){
                dist[x.f]=dist[z]+x.s;
                q.push(x.f);
            }
        }
    }
    return lst;
}
int da[maxn],db[maxn],dc[maxn];
vector<int> ppl;
int travelTime(int n, int m, int l, int A[], int B[], int T[]) {
    REP(i,m){
        v[A[i]].pb({B[i],T[i]});
        v[B[i]].pb({A[i],T[i]});
    }
    vector<int> dst;
    REP(i,n) da[i]=db[i]=dc[i]=INF,vis[i]=0;
    REP(i,n){
        if(!vis[i]){
            int u=bfs(i,dc);
            int vv=bfs(u,da);
            ppl.clear();
            bfs(vv,db,ppl);
            int mn=INF;
            for(auto x:ppl){
                vis[x]=1;
                MNTO(mn,max(da[x],db[x]));
            }
            //cout<<mn<<'\n';
            //cout<<'\n';
            dst.pb(mn);
        }
    }
    sort(ALL(dst));
    reverse(ALL(dst));
    int mx=dst[0];
    if(sz(dst)>=2) MXTO(mx,dst[0]+dst[1]+l);
    if(sz(dst)>=3) MXTO(mx,dst[1]+dst[2]+2*l);
    return mx;
}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 55 ms 8576 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 55 ms 8576 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 55 ms 8576 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 6524 KB Output is correct
2 Correct 74 ms 6776 KB Output is correct
3 Correct 74 ms 6520 KB Output is correct
4 Correct 73 ms 6648 KB Output is correct
5 Correct 72 ms 6524 KB Output is correct
6 Correct 76 ms 7032 KB Output is correct
7 Correct 55 ms 6776 KB Output is correct
8 Correct 52 ms 6524 KB Output is correct
9 Correct 66 ms 6520 KB Output is correct
10 Correct 75 ms 6776 KB Output is correct
11 Correct 2 ms 2688 KB Output is correct
12 Correct 38 ms 4604 KB Output is correct
13 Correct 42 ms 4604 KB Output is correct
14 Correct 38 ms 4604 KB Output is correct
15 Correct 69 ms 4596 KB Output is correct
16 Correct 65 ms 4596 KB Output is correct
17 Correct 38 ms 4600 KB Output is correct
18 Correct 64 ms 4724 KB Output is correct
19 Correct 65 ms 4596 KB Output is correct
20 Correct 2 ms 2688 KB Output is correct
21 Correct 2 ms 2688 KB Output is correct
22 Correct 3 ms 2688 KB Output is correct
23 Correct 64 ms 4596 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 55 ms 8576 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 55 ms 8576 KB Output isn't correct
2 Halted 0 ms 0 KB -