oj.uz

Submission #1023105

# Submission time Handle Problem Language Result Execution time Memory
1023105 2024-07-14T09:45:47 Z Arpi2007 Awesome Arrowland Adventure (eJOI19_adventure) C++14
100 / 100
 76 ms 40796 KB 
#include <iostream>
#include <queue>
#include <fstream>
#include <cmath>
#include <algorithm>
#include <string>
#include <vector>
#include <set>
#include <map>
#include <utility>
#include <stack>
#include <math.h>
#include <climits>
#include <iomanip>
#include <unordered_map>
using namespace std;
 
#define ll long long
#define ld long double
#define ull unsigned long long
#define ub upper_bound
#define lb lower_bound 
#define ff first
#define ss second
#define mpr make_pair
#define vi vector<int>
#define vll vector<ll>
#define pii pair<int,int>
#define vpi vector<pii>
#define pb push_back
#define pob pop_back
#define mii map<int,int>
#define vpl vector<pair<ll, ll>>
#define pll pair<ll,ll>
#define all(v) v.begin(),v.end()
#define sz(x) x.size()
#define clr(x) x.clear()
#define yes cout << "YES\n"
#define no cout << "NO\n"
//ifstream cin("bcount.in");
//ofstream cout("bcount.out");
 
void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
}
 
void setprecision(int x) {
 
    cout.setf(ios::fixed | ios::showpoint);
    cout.precision(x);
}
 
/*void setIO(string name = "") {
    if ((int)name.size() > 0) {
        freopen((name + ".in").c_str(), "r", stdin);
        freopen((name + ".out").c_str(), "w", stdout);
    }
}*/
 
ll gcd(ll a, ll b) {
    if (a > b) {
        swap(a, b);
    }
    if (a == 0) {
        return b;
    }
    if (a == b) {
        return a;
    }
    return gcd(b - a, a);
}
 
ll num(ll n) {
    ll ans = 0;
    while (n != 0) {
        ans++;
        n /= 10;
    }
    return ans;
}
 
ll lcm(ll a, ll b) {
    return (a * b) / gcd(a, b);
}
 
ll MOD = 1e9 + 7;
ll MOD2 = 998244353;
 
ll factorial(ll n) {
    ll ans = 1;
    for (int i = 1; i <= n; i++) {
        ans *= i;
        ans %= MOD2;
    }
    return ans;
}
ll fact2(ll n, ll k) {
    ll ans = 1;
    for (int i = 1; i <= n; i++) {
        if (i == k) {
            ans *= (k - 1);
        }
        else {
            ans *= i;
        }
        ans %= MOD2;
    }
    return ans;
}
 
bool isPrime(int n)
{
    if (n <= 1) {
        return false;
    }
    if (n == 2) {
        return true;
    }
    for (int i = 2; i * i <= n; i++) {
        if (n % i == 0)
            return false;
    }
    return true;
}

ll bpow_mod(ll a, ll b, ll mod)
{
  ll ans = 1;
  while (b) {
    if ((b & 1) == 1) {
      ans *= a;
     ans %= mod;
    }
    b >>= 1;
    a *= a;
    a %= mod;
  }
  return ans;
}

 
bool sortbysec(const pair<int, int>& a,
    const pair<int, int>& b)
{
    return (a.second < b.second);
}
 
bool ask(vector<int> vertices) {
    cout << "? " << vertices.size();
    for(int x: vertices) {
        cout << " " << x;
    }
    cout << endl << flush;
    string answer;
    cin >> answer;
    return (answer == "YES");
}

void precalc(){
    return;
}

const int N = 1e6 + 10;
char c[502][502];
vpi g[N];
int m, n;
int dist[N];

bool check(int i, int j){
    if(i <= m && i >= 1 && j <= n && j >= 1){
        return true;
    }
    return false;
}

int f(int i, int j){
    return (i - 1) * n + j;
}

void solve() {
     cin >> m >> n;
    for(int i = 1; i <= m; ++i){
        for(int j = 1; j <= n; ++j){
            cin >> c[i][j];
        }
    }
    for(int i = 1; i <= m; ++i){
        for(int j = 1; j <= n; ++j){
            dist[f(i, j)] = 1e9;
            if(c[i][j] == 'E'){
                if(check(i, j + 1)){
                    g[f(i, j)].pb({f(i, j + 1), 0});
                }
                if(check(i + 1, j)){
                    g[f(i, j)].pb({f(i + 1, j), 1});
                }
                if(check(i, j - 1)){
                    g[f(i, j)].pb({f(i, j - 1), 2});
                }
                if(check(i - 1, j)){
                    g[f(i, j)].pb({f(i - 1, j), 3});
                }
            }
            if(c[i][j] == 'S'){
                if(check(i, j + 1)){
                    g[f(i, j)].pb({f(i, j + 1), 3});
                }
                if(check(i + 1, j)){
                    g[f(i, j)].pb({f(i + 1, j), 0});
                }
                if(check(i, j - 1)){
                    g[f(i, j)].pb({f(i, j - 1), 1});
                }
                if(check(i - 1, j)){
                    g[f(i, j)].pb({f(i - 1, j), 2});
                }
            }
            if(c[i][j] == 'W'){
                if(check(i, j + 1)){
                    g[f(i, j)].pb({f(i, j + 1), 2});
                }
                if(check(i + 1, j)){
                    g[f(i, j)].pb({f(i + 1, j), 3});
                }
                if(check(i, j - 1)){
                    g[f(i, j)].pb({f(i, j - 1), 0});
                }
                if(check(i - 1, j)){
                    g[f(i, j)].pb({f(i - 1, j), 1});
                }
            }
            if(c[i][j] == 'N'){
                if(check(i, j + 1)){
                    g[f(i, j)].pb({f(i, j + 1), 1});
                }
                if(check(i + 1, j)){
                    g[f(i, j)].pb({f(i + 1, j), 2});
                }
                if(check(i, j - 1)){
                    g[f(i, j)].pb({f(i, j - 1), 3});
                }
                if(check(i - 1, j)){
                    g[f(i, j)].pb({f(i - 1, j), 0});
                }
            }
           // cout << sz(g[f(i, j)]) << ' ' << i << ' ' << j << endl;
        }
    }
   // cout << sz(g[5]) << endl;
    priority_queue<pii>pq;
    pq.push({0, 1});
    dist[1] = 0;
    while(!pq.empty()){
        int k = -pq.top().ff;
        int u = pq.top().ss;
        pq.pop();
        if(k > dist[u]){
            continue;
        }
        for(auto i : g[u]){
            if(dist[i.ff] > i.ss + dist[u]){
                dist[i.ff] = i.ss + dist[u];
                pq.push({-dist[i.ff], i.ff});
            }
        }
    }
    int v = n * m;
    if(dist[n * m] == 1e9){
        cout << -1 << endl;return;
    }
    cout << dist[n * m] << endl;
}


void cases() {
    int t;
    cin >> t;
    while (t--) {
        solve();
    }  
}
 
int main() {
    fastio();
    precalc();
    //cases();
    solve();
    return 0;
}

Compilation message

adventure.cpp: In function 'void solve()':
adventure.cpp:269:9: warning: unused variable 'v' [-Wunused-variable]
  269 |     int v = n * m;
      |         ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 24068 KB Output is correct
2 Correct 11 ms 25436 KB Output is correct
3 Correct 15 ms 23900 KB Output is correct
4 Correct 10 ms 23900 KB Output is correct
5 Correct 9 ms 23900 KB Output is correct
6 Correct 11 ms 23776 KB Output is correct
7 Correct 10 ms 25432 KB Output is correct
8 Correct 12 ms 25432 KB Output is correct
9 Correct 9 ms 25436 KB Output is correct
10 Correct 10 ms 25436 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 24068 KB Output is correct
2 Correct 11 ms 25436 KB Output is correct
3 Correct 15 ms 23900 KB Output is correct
4 Correct 10 ms 23900 KB Output is correct
5 Correct 9 ms 23900 KB Output is correct
6 Correct 11 ms 23776 KB Output is correct
7 Correct 10 ms 25432 KB Output is correct
8 Correct 12 ms 25432 KB Output is correct
9 Correct 9 ms 25436 KB Output is correct
10 Correct 10 ms 25436 KB Output is correct
11 Correct 11 ms 25436 KB Output is correct
12 Correct 12 ms 25432 KB Output is correct
13 Correct 12 ms 25436 KB Output is correct
14 Correct 16 ms 25436 KB Output is correct
15 Correct 10 ms 25436 KB Output is correct
16 Correct 10 ms 25432 KB Output is correct
17 Correct 10 ms 25452 KB Output is correct
18 Correct 11 ms 25436 KB Output is correct
19 Correct 13 ms 25492 KB Output is correct
20 Correct 14 ms 25436 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 25488 KB Output is correct
2 Correct 11 ms 25436 KB Output is correct
3 Correct 11 ms 25472 KB Output is correct
4 Correct 10 ms 25436 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 25436 KB Output is correct
2 Correct 11 ms 25436 KB Output is correct
3 Correct 11 ms 25436 KB Output is correct
4 Correct 11 ms 25456 KB Output is correct
5 Correct 10 ms 25432 KB Output is correct
6 Correct 11 ms 25436 KB Output is correct
7 Correct 9 ms 25436 KB Output is correct
8 Correct 11 ms 25436 KB Output is correct
9 Correct 10 ms 25436 KB Output is correct
10 Correct 11 ms 25428 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 24068 KB Output is correct
2 Correct 11 ms 25436 KB Output is correct
3 Correct 15 ms 23900 KB Output is correct
4 Correct 10 ms 23900 KB Output is correct
5 Correct 9 ms 23900 KB Output is correct
6 Correct 11 ms 23776 KB Output is correct
7 Correct 10 ms 25432 KB Output is correct
8 Correct 12 ms 25432 KB Output is correct
9 Correct 9 ms 25436 KB Output is correct
10 Correct 10 ms 25436 KB Output is correct
11 Correct 11 ms 25436 KB Output is correct
12 Correct 12 ms 25432 KB Output is correct
13 Correct 12 ms 25436 KB Output is correct
14 Correct 16 ms 25436 KB Output is correct
15 Correct 10 ms 25436 KB Output is correct
16 Correct 10 ms 25432 KB Output is correct
17 Correct 10 ms 25452 KB Output is correct
18 Correct 11 ms 25436 KB Output is correct
19 Correct 13 ms 25492 KB Output is correct
20 Correct 14 ms 25436 KB Output is correct
21 Correct 10 ms 25488 KB Output is correct
22 Correct 11 ms 25436 KB Output is correct
23 Correct 11 ms 25472 KB Output is correct
24 Correct 10 ms 25436 KB Output is correct
25 Correct 11 ms 25436 KB Output is correct
26 Correct 11 ms 25436 KB Output is correct
27 Correct 11 ms 25436 KB Output is correct
28 Correct 11 ms 25456 KB Output is correct
29 Correct 10 ms 25432 KB Output is correct
30 Correct 11 ms 25436 KB Output is correct
31 Correct 9 ms 25436 KB Output is correct
32 Correct 11 ms 25436 KB Output is correct
33 Correct 10 ms 25436 KB Output is correct
34 Correct 11 ms 25428 KB Output is correct
35 Correct 15 ms 26460 KB Output is correct
36 Correct 9 ms 25692 KB Output is correct
37 Correct 17 ms 26716 KB Output is correct
38 Correct 15 ms 27280 KB Output is correct
39 Correct 75 ms 36532 KB Output is correct
40 Correct 74 ms 36444 KB Output is correct
41 Correct 33 ms 36404 KB Output is correct
42 Correct 72 ms 36504 KB Output is correct
43 Correct 76 ms 40796 KB Output is correct
44 Correct 34 ms 36436 KB Output is correct