oj.uz

Submission #575627

# Submission time Handle Problem Language Result Execution time Memory
575627 2022-06-11T06:55:32 Z ktkerem Tracks in the Snow (BOI13_tracks) C++17
100 / 100
 1130 ms 202268 KB 
/*#pragma GCC target ("avx2")
#pragma GCC optimize ("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")*/
#include<bits/stdc++.h>
/*#include <bits/extc++.h>
using namespace std;
using namespace __gnu_pbds;
template<class T>
using oset = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;
/**/
//typedef int ll;
typedef long long ll;
typedef unsigned long long ull;
typedef __int128 vll;
typedef unsigned __int128 uvll;
ll _i=0;
#define ffn(x) _i=x
#define llll std::pair<ll , ll>
#define stitr set<ll>::iterator
#define fora(y,x) for(ll y=_i;x>y;y++)
#define pb push_back
#define pf push_front
#define halo cout << "hello\n"
#define fi first
#define sec second
#define all(a) a.begin() , a.end()
const ll limit = 1e9 + 7; 
const ll ous = 1e6 + 7;
const ll dx[4] = {1 , 0 , 0 , -1} , dy[4] = {0,1,-1,0};
void solve(){
    ll n , m;std::cin >> n >> m;
    ll vis[n+5][m+5];
    memset(vis , 0 , sizeof(vis));
    std::string h[n];
    fora(i , n){
        std::cin >> h[i];
    }
    std::vector<llll> v; 
    v.pb({0 , 0});
    std::queue<llll> que;
    ll ans = 0;
    while(!v.empty()){
        for(auto j:v){
            que.push(j);
        }
        v.clear();
        while(!que.empty()){
            llll a = que.front();
            que.pop();
            if(vis[a.fi][a.sec] == 2){
                continue;
            }
            vis[a.fi][a.sec] = 2;
            fora(i , 4){
                if(dx[i] + a.fi >= 0 && dx[i] + a.fi < n && dy[i] + a.sec >= 0 && dy[i] + a.sec < m && h[dx[i] + a.fi][dy[i] + a.sec] != '.'){
                    if(h[dx[i] + a.fi][dy[i] + a.sec] == h[a.fi][a.sec] && vis[dx[i] + a.fi][dy[i] + a.sec] == 0){
                        vis[dx[i] + a.fi][dy[i] + a.sec] = 1;
                        que.push({dx[i] + a.fi , dy[i] + a.sec});
                    }
                    else if(vis[dx[i] + a.fi][dy[i] + a.sec] == 0){
                        vis[dx[i] + a.fi][dy[i] + a.sec] = 1;
                        v.pb({dx[i] + a.fi , dy[i] + a.sec});
                    }
                }
            }
        }
        ans++;
    }
    std::cout << ans << "\n";
    return;/**/
}
signed main(){
    std::ios_base::sync_with_stdio(false);std::cin.tie(NULL);
    ll t=1;
    //std::cin >> t;
    ll o = 1;
    while(t--){ 
        //cout << "Case " << o++ << ":\n";
        solve();
    }
    return 0; 
}

Compilation message

tracks.cpp:12:1: warning: "/*" within comment [-Wcomment]
   12 | /**/
      |  
tracks.cpp: In function 'int main()':
tracks.cpp:78:8: warning: unused variable 'o' [-Wunused-variable]
   78 |     ll o = 1;
      |        ^

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 2924 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 9 ms 2328 KB Output is correct
5 Correct 2 ms 1108 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 3 ms 980 KB Output is correct
11 Correct 2 ms 852 KB Output is correct
12 Correct 6 ms 1236 KB Output is correct
13 Correct 2 ms 1108 KB Output is correct
14 Correct 2 ms 1108 KB Output is correct
15 Correct 13 ms 2900 KB Output is correct
16 Correct 15 ms 2900 KB Output is correct
17 Correct 9 ms 2764 KB Output is correct
18 Correct 7 ms 2332 KB Output is correct

Subtask #2
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 980 KB Output is correct
2 Correct 50 ms 15936 KB Output is correct
3 Correct 250 ms 159360 KB Output is correct
4 Correct 67 ms 37572 KB Output is correct
5 Correct 167 ms 89688 KB Output is correct
6 Correct 1102 ms 202180 KB Output is correct
7 Correct 2 ms 980 KB Output is correct
8 Correct 1 ms 972 KB Output is correct
9 Correct 3 ms 1168 KB Output is correct
10 Correct 1 ms 724 KB Output is correct
11 Correct 2 ms 980 KB Output is correct
12 Correct 1 ms 544 KB Output is correct
13 Correct 51 ms 15996 KB Output is correct
14 Correct 28 ms 9252 KB Output is correct
15 Correct 19 ms 10160 KB Output is correct
16 Correct 26 ms 6824 KB Output is correct
17 Correct 139 ms 40556 KB Output is correct
18 Correct 71 ms 39940 KB Output is correct
19 Correct 70 ms 37492 KB Output is correct
20 Correct 59 ms 34328 KB Output is correct
21 Correct 158 ms 92676 KB Output is correct
22 Correct 161 ms 89552 KB Output is correct
23 Correct 270 ms 77352 KB Output is correct
24 Correct 127 ms 90440 KB Output is correct
25 Correct 431 ms 159280 KB Output is correct
26 Correct 568 ms 122080 KB Output is correct
27 Correct 658 ms 165716 KB Output is correct
28 Correct 1130 ms 202268 KB Output is correct
29 Correct 1057 ms 192400 KB Output is correct
30 Correct 900 ms 185520 KB Output is correct
31 Correct 822 ms 103616 KB Output is correct
32 Correct 572 ms 162088 KB Output is correct