oj.uz

Submission #742283

# Submission time Handle Problem Language Result Execution time Memory
742283 2023-05-16T04:17:10 Z irmuun Tracks in the Snow (BOI13_tracks) C++17
51.875 / 100
 474 ms 1048580 KB 
#include<bits/stdc++.h>
 
using namespace std;
 
#define pb push_back
#define ll long long
#define ff first
#define ss second
#define all(s) s.begin(),s.end()

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    int h,w;
    cin>>h>>w;
    string s[h+5];
    int used[h+5][w+5];
    memset(used,0,sizeof(used));
    for(int i=0;i<h;i++){
        cin>>s[i];
    }
    set<pair<int,pair<int,int>>>st;
    st.insert({1,{0,0}});
    used[0][0]=1;
    queue<pair<int,int>>q[h*w+5];
    q[1].push({0,0});
    for(int i=1;i<=h*w+1;i++){
        if(q[i].size()==0){
            cout<<i-1;
            return 0;
        }
        while(!q[i].empty()){
            int x=q[i].front().ff,y=q[i].front().ss;
            q[i].pop();
            if(x>0&&used[x-1][y]==0){
                if(s[x-1][y]==s[x][y]){
                    used[x-1][y]=1;
                    q[i].push({x-1,y});
                }
                else if(s[x-1][y]!='.'){
                    used[x-1][y]=1;
                    q[i+1].push({x-1,y});
                }
            }
            if(x<h-1&&used[x+1][y]==0){
                if(s[x+1][y]==s[x][y]){
                    used[x+1][y]=1;
                    q[i].push({x+1,y});
                }
                else if(s[x+1][y]!='.'){
                    used[x+1][y]=1;
                    q[i+1].push({x+1,y});
                }
            }
            if(y>0&&used[x][y-1]==0){
                if(s[x][y-1]==s[x][y]){
                    used[x][y-1]=1;
                    q[i].push({x,y-1});
                }
                else if(s[x][y-1]!='.'){
                    used[x][y-1]=1;
                    q[i+1].push({x,y-1});
                }
            }
            if(y<w-1&&used[x][y+1]==0){
                if(s[x][y+1]==s[x][y]){
                    used[x][y+1]=1;
                    q[i].push({x,y+1});
                }
                else if(s[x][y+1]!='.'){
                    used[x][y+1]=1;
                    q[i+1].push({x,y+1});
                }
            }
        }
    }
}

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 123 ms 163916 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 2004 KB Output is correct
4 Correct 70 ms 104456 KB Output is correct
5 Correct 34 ms 56908 KB Output is correct
6 Correct 0 ms 468 KB Output is correct
7 Correct 1 ms 2004 KB Output is correct
8 Correct 3 ms 3540 KB Output is correct
9 Correct 4 ms 6996 KB Output is correct
10 Correct 27 ms 44420 KB Output is correct
11 Correct 17 ms 27472 KB Output is correct
12 Correct 42 ms 59168 KB Output is correct
13 Correct 35 ms 56940 KB Output is correct
14 Correct 36 ms 56940 KB Output is correct
15 Correct 106 ms 169908 KB Output is correct
16 Correct 114 ms 163840 KB Output is correct
17 Correct 96 ms 161784 KB Output is correct
18 Correct 72 ms 104572 KB Output is correct

Subtask #2
21.875 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 34120 KB Output is correct
2 Runtime error 443 ms 1048576 KB Execution killed with signal 9
3 Runtime error 469 ms 1048576 KB Execution killed with signal 9
4 Runtime error 445 ms 1048580 KB Execution killed with signal 9
5 Runtime error 418 ms 1048576 KB Execution killed with signal 9
6 Runtime error 423 ms 1048576 KB Execution killed with signal 9
7 Correct 19 ms 30292 KB Output is correct
8 Correct 24 ms 34080 KB Output is correct
9 Correct 29 ms 40112 KB Output is correct
10 Correct 16 ms 22112 KB Output is correct
11 Correct 23 ms 32328 KB Output is correct
12 Correct 9 ms 15572 KB Output is correct
13 Runtime error 474 ms 1048576 KB Execution killed with signal 9
14 Correct 427 ms 611532 KB Output is correct
15 Correct 446 ms 677348 KB Output is correct
16 Correct 334 ms 434624 KB Output is correct
17 Runtime error 421 ms 1048576 KB Execution killed with signal 9
18 Runtime error 427 ms 1048576 KB Execution killed with signal 9
19 Runtime error 447 ms 1048576 KB Execution killed with signal 9
20 Runtime error 437 ms 1048576 KB Execution killed with signal 9
21 Runtime error 421 ms 1048576 KB Execution killed with signal 9
22 Runtime error 434 ms 1048576 KB Execution killed with signal 9
23 Runtime error 420 ms 1048576 KB Execution killed with signal 9
24 Runtime error 421 ms 1048576 KB Execution killed with signal 9
25 Runtime error 423 ms 1048576 KB Execution killed with signal 9
26 Runtime error 419 ms 1048576 KB Execution killed with signal 9
27 Runtime error 443 ms 1048576 KB Execution killed with signal 9
28 Runtime error 434 ms 1048576 KB Execution killed with signal 9
29 Runtime error 420 ms 1048576 KB Execution killed with signal 9
30 Runtime error 407 ms 1048576 KB Execution killed with signal 9
31 Runtime error 423 ms 1048576 KB Execution killed with signal 9
32 Runtime error 406 ms 1048576 KB Execution killed with signal 9