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Submission #1109518

# Submission time Handle Problem Language Result Execution time Memory
1109518 2024-11-07T01:46:44 Z vjudge1 Pohlepko (COCI16_pohlepko) C++17
0 / 80
 64 ms 65536 KB 
#include <bits/stdc++.h>
#define F first
#define S second
#define LL long long
 
#define rep(i, x) for(auto &i : (x))
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
 
#define left(x) ((x)<<1)
#define right(x) ((x)>>1)
#define LSOne(x) (x & -(x))
 
using namespace std;
using T = pair<pair<int,char>, pair<int, int>>;
 
const int SZ = 2e5 + 1;
const LL MOD = 1e9 + 7; 
const LL INF = 1e18 + 1;
 
LL bp (LL b, LL e, LL m = MOD) {
 if ( e == 0 ) return 1;
 LL T = bp(b, e / 2);
 T *= T; T %= m;
 if ( e & 1 ) T *= b;
 return T %= m;
}
 
LL nv_i (LL a) { return bp(a, MOD - 2); };
LL gcd (LL a, LL b) { return (b == 0 ? a : gcd(b, a % b)); }
LL lcm(LL a, LL b) { return (a * (b / gcd(a, b))); }
LL ceil (LL a, LL b) { return ((a + b - 1) / b); }
 
vector<vector<char>> G;
vector<vector<bool>> VIS;
vector<char> LETTERS;
int n, m;

void bfs() {
  queue<T> Q;

  Q.push({{1, 'z'}, {1, 1}});

  while(!Q.empty()) {
    int dist = Q.front().F.F, i = Q.front().S.F, j = Q.front().S.S, prev_l = Q.front().F.S;
    Q.pop();

    if(VIS[i][j] || i > n || j > m || LETTERS[dist - 1] != prev_l) continue;
    VIS[i][j] = 1;
    
    LETTERS[dist] = min(LETTERS[dist], G[i][j]);

    Q.push({{dist + 1, G[i][j]}, {i + 1, j}});
    Q.push({{dist + 1, G[i][j]}, {i, j + 1}});
  }
}

void solve() {
  cin >> n >> m;
 
  G.resize(1e4, vector<char> (1e4));
  VIS.resize(1e4, vector<bool> (1e4));
  LETTERS.resize(n + m, 'z');

  for(int i = 1; i <= n; i ++) {
    for(int j = 1; j <= m; j ++) {
      cin >> G[i][j];
    }
  } 

  bfs();

  for(int i = 1; i < n + m; i ++) {
    cout << LETTERS[i];
  }
}
 
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0), cout.tie(0);
 
  solve();
  return 0;
}

Subtask #1
0 / 80.0

# Verdict Execution time Memory Grader output
1 Runtime error 51 ms 65536 KB Execution killed with signal 9
2 Runtime error 64 ms 65536 KB Execution killed with signal 9
3 Runtime error 51 ms 65536 KB Execution killed with signal 9
4 Runtime error 52 ms 65536 KB Execution killed with signal 9
5 Runtime error 55 ms 65536 KB Execution killed with signal 9
6 Runtime error 51 ms 65536 KB Execution killed with signal 9
7 Runtime error 51 ms 65536 KB Execution killed with signal 9
8 Runtime error 54 ms 65536 KB Execution killed with signal 9
9 Runtime error 52 ms 65536 KB Execution killed with signal 9
10 Runtime error 55 ms 65536 KB Execution killed with signal 9
11 Runtime error 54 ms 65536 KB Execution killed with signal 9
12 Runtime error 55 ms 65536 KB Execution killed with signal 9
13 Runtime error 58 ms 65536 KB Execution killed with signal 9
14 Runtime error 52 ms 65536 KB Execution killed with signal 9
15 Runtime error 53 ms 65536 KB Execution killed with signal 9
16 Runtime error 64 ms 65536 KB Execution killed with signal 9