Submission #836479

#	Time	Username	Problem	Language	Result	Execution time	Memory
836479		_martynas	Two Transportations (JOI19_transportations)	C++14	100 / 100	691 ms	48884 KiB

Azer

#include "Azer.h"
#include <bits/stdc++.h>

#define fi first
#define se second

using namespace std;

const int mxn = 2001;
const int mxval = 9;
const int mxloc = 11;
const int inf = 1e6;

namespace {
int n;
vector<pair<int, int>> adj[mxn];
bool visited[mxn];
vector<int> dist;
int mxdist = 0;

void send_val(int x, int bits) {
    vector<bool> send;
    for(int i = 0; i < bits; i++) {
        send.push_back(x % 2 == 1);
        x /= 2;
    }
    reverse(send.begin(), send.end());
    for(bool x : send) SendA(x);
}

int val = 0, tim = 0;
void read_val(int t) {
    val = 0;
    tim = t;
}

void place(int u, int d) {
    visited[u] = true; dist[u] = d;
    for(auto e : adj[u]) dist[e.fi] = min(dist[e.fi], dist[u]+e.se);
    mxdist = max(mxdist, dist[u]);
}

int gotd = 0;
bool reading_location = false;
pair<int, int> my_mn;
pair<int, int> get_min_dist_loc() {
    pair<int, int> res = {(1<<mxval)-1, (1<<mxloc)-1};
    for(int i = 0; i < n; i++) if(!visited[i] && dist[i] < inf) {
        if(dist[i]-mxdist < res.fi) {
            res = {dist[i]-mxdist, i};
        }
    }
    return res;
}
}  // namespace

void InitA(int N, int A, vector<int> U, vector<int> V, vector<int> C) {
    n = N;
    for(int i = 0; i < A; i++) {
        adj[U[i]].push_back({V[i], C[i]});
        adj[V[i]].push_back({U[i], C[i]});
    }
    dist = vector<int>(n, inf);
    place(0, 0);
    if(n == 1) return;
    my_mn = get_min_dist_loc();
    send_val(my_mn.fi, mxval);
    read_val(mxval);
}

void ReceiveA(bool x) {
    if(tim > 0) {
        val = 2*val+x;
        tim--;
    }
    if(tim > 0) return;
    if(!reading_location) {
        if(my_mn.fi <= val) {
            place(my_mn.se, mxdist+my_mn.fi);
            send_val(my_mn.se, mxloc);
            if(count(visited, visited+n, true) >= n) return;
            my_mn = get_min_dist_loc();
            send_val(my_mn.fi, mxval);
            read_val(mxval);
        }
        else {
            reading_location = true;
            gotd = val;
            read_val(mxloc);
        }
    }
    else {
        reading_location = false;
        place(val, mxdist+gotd);
        if(count(visited, visited+n, true) >= n) return;
        my_mn = get_min_dist_loc();
        send_val(my_mn.fi, mxval);
        read_val(mxval);
    }
}

vector<int> Answer() {
    return dist;
}

Baijan

#include "Baijan.h"
#include <bits/stdc++.h>

#define fi first
#define se second

using namespace std;

const int mxn = 2001;
const int mxval = 9;
const int mxloc = 11;
const int inf = 1e6;

namespace {
int n;
vector<pair<int, int>> adj[mxn];
bool visited[mxn];
vector<int> dist;
int mxdist = 0;

void send_val(int x, int bits) {
    vector<bool> send;
    for(int i = 0; i < bits; i++) {
        send.push_back(x % 2 == 1);
        x /= 2;
    }
    reverse(send.begin(), send.end());
    for(bool x : send) SendB(x);
}

int val = 0, tim = 0;
void read_val(int t) {
    val = 0;
    tim = t;
}

void place(int u, int d) {
    visited[u] = true; dist[u] = d;
    for(auto e : adj[u]) dist[e.fi] = min(dist[e.fi], dist[u]+e.se);
    mxdist = max(mxdist, dist[u]);
}

int gotd = 0;
bool reading_location = false;
pair<int, int> my_mn;
pair<int, int> get_min_dist_loc() {
    pair<int, int> res = {(1<<mxval)-1, (1<<mxloc)-1};
    for(int i = 0; i < n; i++) if(!visited[i] && dist[i] < inf) {
        if(dist[i]-mxdist < res.fi) {
            res = {dist[i]-mxdist, i};
        }
    }
    return res;
}

}  // namespace


void InitB(int N, int A, vector<int> U, vector<int> V, vector<int> C) {
    n = N;
    for(int i = 0; i < A; i++) {
        adj[U[i]].push_back({V[i], C[i]});
        adj[V[i]].push_back({U[i], C[i]});
    }
    dist = vector<int>(n, inf);
    place(0, 0);
    if(n == 1) return;
    my_mn = get_min_dist_loc();
    send_val(my_mn.fi, mxval);
    read_val(mxval);
}

void ReceiveB(bool x) {
    if(tim > 0) {
        val = 2*val+x;
        tim--;
    }
    if(tim > 0) return;
    if(!reading_location) {
        if(my_mn.fi < val) {
            place(my_mn.se, mxdist+my_mn.fi);
            send_val(my_mn.se, mxloc);
            if(count(visited, visited+n, true) >= n) return;
            my_mn = get_min_dist_loc();
            send_val(my_mn.fi, mxval);
            read_val(mxval);
        }
        else {
            reading_location = true;
            gotd = val;
            read_val(mxloc);
        }
    }
    else {
        reading_location = false;
        place(val, mxdist+gotd);
        if(count(visited, visited+n, true) >= n) return;
        my_mn = get_min_dist_loc();
        send_val(my_mn.fi, mxval);
        read_val(mxval);
    }
}

• Subtask 1: 6 / 6
• Subtask 2: 8 / 8
• Subtask 3: 8 / 8
• Subtask 4: 38 / 38
• Subtask 5: 14 / 14
• Subtask 6: 10 / 10
• Subtask 7: 16 / 16