oj.uz

Submission #833542

# Submission time Handle Problem Language Result Execution time Memory
833542 2023-08-22T06:45:10 Z vjudge1 Bomb (IZhO17_bomb) C++17
12 / 100
 1000 ms 74000 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
// using ld = long double;
#define all(x) begin(x), end(x)
#ifdef LOCAL
#define debug(...) __VA_ARGS__;
#else
#define debug(...)
#endif

template<class A, class B> ostream& operator<<(ostream& os, const pair<A, B> &p);
template<class T> ostream& operator<<(ostream& os, const vector<T> &v);
template<class T, size_t N> ostream& operator<<(ostream& os, const array<T, N> &v);

template<class A, class B>
ostream& operator<<(ostream& os, const pair<A, B> &p) {
  return os << '(' << p.first << ',' << p.second << ')';
}
 
template<class T>
ostream& operator<<(ostream& os, const vector<T> &v) {
  os << '{'; bool fs = 1;
  for(auto &i : v) { if(!fs) os << ','; os << i; fs = 0; }
  return os << '}';
}

template<class T, size_t N>
ostream& operator<<(ostream& os, const array<T, N> &v) {
  os << '{'; bool fs = 1;
  for(auto &i : v) { if(!fs) os << ','; os << i; fs = 0; }
  return os << '}';
}

void init() {
}
 
void solve(int tt = 0) {
  int n, m; cin >> n >> m;
  vector a(n, vector<int>(m));
  bool ok = 0;
  for(auto &v : a) for(int &i : v) {
    char c; cin >> c;
    i = c - '0';
    ok |= i;
  }
  if(!ok) return void(cout << 0 << '\n');
  vector pref(n, vector<int>(m));
  for(int i = 0; i < n; i++) {
    for(int j = 0; j < m; j++) {
      pref[i][j] = a[i][j];
      if(i > 0) pref[i][j] += pref[i-1][j];
      if(j > 0) pref[i][j] += pref[i][j-1];
      if(i > 0 && j > 0) pref[i][j] -= pref[i-1][j-1];
    }
  }
  const auto get = [&](int i1, int j1, int i2, int j2) -> int {
    int ans = pref[i2][j2];
    if(i1 > 0) ans -= pref[i1-1][j2];
    if(j1 > 0) ans -= pref[i2][j1-1];
    if(i1 > 0 && j1 > 0) ans += pref[i1-1][j1-1];
    return ans;
  };
  int ans = 0;
  vector b(n, vector<int>(m));
  for(int h = 1; h <= n; h++) {
    for(int w = 1; w <= m; w++) {
      debug(cerr << "h = " << h << " w = " << w << '\n');
      for(int i = 0; i+h-1 < n; i++) {
        for(int j = 0; j+h-1 < m; j++) {
          if(get(i, j, i+h-1, j+w-1) == h * w) {
            debug(cerr << i << ' ' << j << '\n');
            for(int ii = i; ii < i+h; ii++) {
              for(int jj = j; jj < j+w; jj++) {
                b[ii][jj] = 1;
              }
            }
          }
        }
      }
      if(a == b) ans = max(ans, h * w);
      debug({
        for(int i = 0; i+h-1 < n; i++) {
          for(int j = 0; j+w-1 < m; j++)
            cerr << b[i][j];
          cerr << '\n';
        }
      });
      for(int i = 0; i+h-1 < n; i++) {
        for(int j = 0; j+w-1 < m; j++)
          b[i][j] = 0;
      }
    }
  }
  cout << ans << '\n';
}

void reset() {
}
 
int main() {
  ios::sync_with_stdio(0); cin.tie(0);
  int t = 1; // cin >> t;
  init();
  for(int i = 1; i <= t; i++) solve(i), reset();
  return 0;
}

Subtask #1
12.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 212 KB Output isn't correct
3 Incorrect 6 ms 724 KB Output isn't correct
4 Incorrect 6 ms 724 KB Output isn't correct
5 Correct 38 ms 340 KB Output is correct
6 Correct 28 ms 328 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Runtime error 1 ms 468 KB Execution killed with signal 6
11 Correct 1 ms 212 KB Output is correct
12 Runtime error 1 ms 468 KB Execution killed with signal 6
13 Incorrect 1 ms 212 KB Output isn't correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Runtime error 15 ms 644 KB Execution killed with signal 6
18 Runtime error 16 ms 492 KB Execution killed with signal 6
19 Runtime error 36 ms 588 KB Execution killed with signal 6
20 Runtime error 42 ms 632 KB Execution killed with signal 6
21 Runtime error 18 ms 596 KB Execution killed with signal 6
22 Runtime error 35 ms 648 KB Execution killed with signal 6
23 Runtime error 105 ms 680 KB Execution killed with signal 6
24 Runtime error 29 ms 520 KB Execution killed with signal 6
25 Runtime error 143 ms 684 KB Execution killed with signal 6
26 Execution timed out 1055 ms 340 KB Time limit exceeded
27 Execution timed out 1060 ms 1236 KB Time limit exceeded
28 Execution timed out 1043 ms 1620 KB Time limit exceeded
29 Execution timed out 1067 ms 1748 KB Time limit exceeded
30 Execution timed out 1075 ms 2516 KB Time limit exceeded
31 Execution timed out 1044 ms 2004 KB Time limit exceeded
32 Execution timed out 1030 ms 2132 KB Time limit exceeded
33 Execution timed out 1070 ms 2644 KB Time limit exceeded
34 Execution timed out 1042 ms 1236 KB Time limit exceeded
35 Execution timed out 1051 ms 2644 KB Time limit exceeded
36 Execution timed out 1060 ms 2644 KB Time limit exceeded
37 Correct 1 ms 212 KB Output is correct
38 Execution timed out 1086 ms 73876 KB Time limit exceeded
39 Correct 1 ms 212 KB Output is correct
40 Execution timed out 1085 ms 9428 KB Time limit exceeded
41 Incorrect 1 ms 212 KB Output isn't correct
42 Runtime error 761 ms 684 KB Execution killed with signal 6
43 Execution timed out 1047 ms 73892 KB Time limit exceeded
44 Execution timed out 1051 ms 2644 KB Time limit exceeded
45 Execution timed out 1085 ms 73908 KB Time limit exceeded
46 Execution timed out 1070 ms 73876 KB Time limit exceeded
47 Execution timed out 1069 ms 73908 KB Time limit exceeded
48 Execution timed out 1099 ms 73892 KB Time limit exceeded
49 Execution timed out 1050 ms 73932 KB Time limit exceeded
50 Execution timed out 1030 ms 73932 KB Time limit exceeded
51 Execution timed out 1031 ms 73876 KB Time limit exceeded
52 Execution timed out 1046 ms 74000 KB Time limit exceeded
53 Execution timed out 1085 ms 73900 KB Time limit exceeded
54 Execution timed out 1097 ms 73908 KB Time limit exceeded
55 Execution timed out 1086 ms 73908 KB Time limit exceeded
56 Execution timed out 1089 ms 73876 KB Time limit exceeded
57 Execution timed out 1087 ms 73940 KB Time limit exceeded
58 Execution timed out 1095 ms 73936 KB Time limit exceeded
59 Execution timed out 1069 ms 73876 KB Time limit exceeded
60 Execution timed out 1091 ms 73892 KB Time limit exceeded
61 Execution timed out 1084 ms 73924 KB Time limit exceeded
62 Execution timed out 1089 ms 73892 KB Time limit exceeded
63 Execution timed out 1064 ms 73932 KB Time limit exceeded
64 Execution timed out 1092 ms 73900 KB Time limit exceeded
65 Execution timed out 1091 ms 73876 KB Time limit exceeded
66 Execution timed out 1078 ms 73904 KB Time limit exceeded
67 Execution timed out 1045 ms 73884 KB Time limit exceeded
68 Execution timed out 1088 ms 73904 KB Time limit exceeded
69 Execution timed out 1091 ms 73896 KB Time limit exceeded
70 Execution timed out 1077 ms 47404 KB Time limit exceeded
71 Execution timed out 1086 ms 73880 KB Time limit exceeded
72 Execution timed out 1039 ms 73900 KB Time limit exceeded
73 Execution timed out 1087 ms 73888 KB Time limit exceeded
74 Execution timed out 1088 ms 73900 KB Time limit exceeded
75 Execution timed out 1074 ms 73880 KB Time limit exceeded
76 Execution timed out 1060 ms 73888 KB Time limit exceeded
77 Execution timed out 1048 ms 73872 KB Time limit exceeded
78 Execution timed out 1044 ms 73928 KB Time limit exceeded
79 Execution timed out 1061 ms 73908 KB Time limit exceeded
80 Execution timed out 1072 ms 73964 KB Time limit exceeded
81 Execution timed out 1046 ms 73948 KB Time limit exceeded
82 Execution timed out 1064 ms 73960 KB Time limit exceeded
83 Execution timed out 1076 ms 73872 KB Time limit exceeded
84 Execution timed out 1034 ms 73932 KB Time limit exceeded
85 Execution timed out 1061 ms 73932 KB Time limit exceeded
86 Execution timed out 1047 ms 73932 KB Time limit exceeded
87 Execution timed out 1050 ms 73932 KB Time limit exceeded
88 Execution timed out 1051 ms 73900 KB Time limit exceeded
89 Execution timed out 1057 ms 73932 KB Time limit exceeded
90 Execution timed out 1041 ms 47392 KB Time limit exceeded
91 Execution timed out 1064 ms 73980 KB Time limit exceeded
92 Execution timed out 1064 ms 73932 KB Time limit exceeded
93 Execution timed out 1068 ms 73908 KB Time limit exceeded
94 Execution timed out 1048 ms 73892 KB Time limit exceeded
95 Execution timed out 1048 ms 73932 KB Time limit exceeded
96 Execution timed out 1060 ms 73932 KB Time limit exceeded
97 Execution timed out 1068 ms 73880 KB Time limit exceeded
98 Execution timed out 1040 ms 73956 KB Time limit exceeded
99 Execution timed out 1047 ms 73904 KB Time limit exceeded
100 Execution timed out 1055 ms 73932 KB Time limit exceeded