oj.uz

Submission #167194

# Submission time Handle Problem Language Result Execution time Memory
167194 2019-12-06T10:35:08 Z hentai_lover Bomb (IZhO17_bomb) C++14
26 / 100
 1000 ms 21752 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

#pragma GCC optimize("-O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")

#define pb push_back
#define fr(i, l, r) for(ll i = l; i <= r; ++ i)
#define rf(i, l, r) for(ll i = l; i >= r; -- i)

using namespace std;
using namespace __gnu_pbds;

template <typename T>
using _set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

typedef int ll;
typedef pair<ll, ll> pll;

const ll oo = ll(1e9) + 10;

ll p[3000][300];

ll get(ll x1, ll y1, ll x2, ll y2){
    return p[x2][y2] - p[x2][y1 - 1] - p[x1 - 1][y2] + p[x1 - 1][y1 - 1];
}

int main() {
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    ll n, m, ansx = 0, ansy = 0, ans = 0;
    cin >> n >> m;
    //if(n * m > 10000)return 0;
    char a[n + 1][m + 1];
    fr(i, 1, n)fr(j, 1, m){
        cin >> a[i][j];
        p[i][j] = p[i - 1][j] + p[i][j - 1] - p[i - 1][j - 1] + 1 - (a[i][j] - '0');
    }
    rf(r, n, 1){
        rf(c, m, 1){
            vector <pll> v;
            fr(i, 1, n - r + 1){
                fr(j, 1, m - c + 1){
                    //if(a[i][j] == '0')continue;
                    //cout << "i = " << i << " j = " << j << " get = " << get(i, j, i + r - 1, j + c - 1) << endl;
                    if(get(i, j, i + r - 1, j + c - 1) == 0)v.pb({i, j});
                }
            }
            reverse(v.begin(), v.end());
            //cout << "r = " << r << " c = " << c << endl;
            //cout << "v: " << endl;
            //for(auto i : v)cout << i.first << ' ' << i.second << endl;
            bool usd[n + 1][m + 1];
            fr(i, 1, n)fr(j, 1, m)usd[i][j] = 0;
            for(auto x : v){
                fr(i, 0, r - 1){
                    if(usd[x.first + i][x.second])break;
                    fr(j, 0, c - 1){
                        if(usd[x.first + i][x.second + j])break;
                        usd[x.first + i][x.second + j] = 1;
                    }
                }
            }

            bool ok = 1;
            fr(i, 1, n){
                fr(j, 1, m){
                    if(a[i][j] == '1' && usd[i][j] == 0)ok = 0;
                }
            }
            if(ok)ans = max(ans, r * c);
        }
    }
    //cout << ansx << ' ' << ansy << endl;
    cout << ans;
}


/*
3 3
011
111
111
*/

Compilation message

bomb.cpp: In function 'int main()':
bomb.cpp:31:14: warning: unused variable 'ansx' [-Wunused-variable]
     ll n, m, ansx = 0, ansy = 0, ans = 0;
              ^~~~
bomb.cpp:31:24: warning: unused variable 'ansy' [-Wunused-variable]
     ll n, m, ansx = 0, ansy = 0, ans = 0;
                        ^~~~

Subtask #1
26.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 98 ms 3320 KB Output is correct
4 Correct 89 ms 3320 KB Output is correct
5 Correct 20 ms 376 KB Output is correct
6 Correct 9 ms 376 KB Output is correct
7 Correct 14 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 3 ms 376 KB Output is correct
17 Incorrect 29 ms 504 KB Output isn't correct
18 Correct 30 ms 504 KB Output is correct
19 Correct 76 ms 504 KB Output is correct
20 Correct 83 ms 540 KB Output is correct
21 Correct 30 ms 376 KB Output is correct
22 Incorrect 65 ms 504 KB Output isn't correct
23 Correct 137 ms 508 KB Output is correct
24 Correct 52 ms 504 KB Output is correct
25 Correct 161 ms 812 KB Output is correct
26 Correct 429 ms 724 KB Output is correct
27 Execution timed out 1080 ms 1100 KB Time limit exceeded
28 Execution timed out 1070 ms 1016 KB Time limit exceeded
29 Execution timed out 1064 ms 1400 KB Time limit exceeded
30 Execution timed out 1086 ms 1400 KB Time limit exceeded
31 Execution timed out 1069 ms 1144 KB Time limit exceeded
32 Execution timed out 1080 ms 1272 KB Time limit exceeded
33 Execution timed out 1081 ms 1400 KB Time limit exceeded
34 Execution timed out 1079 ms 1012 KB Time limit exceeded
35 Execution timed out 1059 ms 1528 KB Time limit exceeded
36 Execution timed out 1079 ms 1664 KB Time limit exceeded
37 Correct 3 ms 376 KB Output is correct
38 Execution timed out 1073 ms 20384 KB Time limit exceeded
39 Correct 3 ms 376 KB Output is correct
40 Execution timed out 1088 ms 3576 KB Time limit exceeded
41 Incorrect 3 ms 376 KB Output isn't correct
42 Incorrect 255 ms 760 KB Output isn't correct
43 Execution timed out 1073 ms 21368 KB Time limit exceeded
44 Execution timed out 1065 ms 1528 KB Time limit exceeded
45 Execution timed out 1075 ms 21624 KB Time limit exceeded
46 Execution timed out 1071 ms 21568 KB Time limit exceeded
47 Execution timed out 1065 ms 21624 KB Time limit exceeded
48 Execution timed out 1073 ms 21728 KB Time limit exceeded
49 Execution timed out 1082 ms 21596 KB Time limit exceeded
50 Execution timed out 1078 ms 21624 KB Time limit exceeded
51 Execution timed out 1078 ms 21624 KB Time limit exceeded
52 Execution timed out 1082 ms 21624 KB Time limit exceeded
53 Execution timed out 1084 ms 21624 KB Time limit exceeded
54 Execution timed out 1064 ms 21624 KB Time limit exceeded
55 Execution timed out 1073 ms 21688 KB Time limit exceeded
56 Execution timed out 1077 ms 21624 KB Time limit exceeded
57 Execution timed out 1075 ms 21624 KB Time limit exceeded
58 Execution timed out 1083 ms 21624 KB Time limit exceeded
59 Execution timed out 1068 ms 21624 KB Time limit exceeded
60 Execution timed out 1060 ms 21628 KB Time limit exceeded
61 Execution timed out 1075 ms 21624 KB Time limit exceeded
62 Execution timed out 1064 ms 21624 KB Time limit exceeded
63 Execution timed out 1084 ms 21644 KB Time limit exceeded
64 Execution timed out 1081 ms 21624 KB Time limit exceeded
65 Execution timed out 1082 ms 21624 KB Time limit exceeded
66 Execution timed out 1079 ms 21576 KB Time limit exceeded
67 Execution timed out 1063 ms 21716 KB Time limit exceeded
68 Execution timed out 1080 ms 21624 KB Time limit exceeded
69 Execution timed out 1082 ms 21624 KB Time limit exceeded
70 Execution timed out 1071 ms 14456 KB Time limit exceeded
71 Execution timed out 1076 ms 21628 KB Time limit exceeded
72 Execution timed out 1071 ms 21624 KB Time limit exceeded
73 Execution timed out 1072 ms 21624 KB Time limit exceeded
74 Execution timed out 1072 ms 21560 KB Time limit exceeded
75 Execution timed out 1081 ms 21624 KB Time limit exceeded
76 Execution timed out 1076 ms 21624 KB Time limit exceeded
77 Execution timed out 1080 ms 21660 KB Time limit exceeded
78 Execution timed out 1079 ms 21624 KB Time limit exceeded
79 Execution timed out 1069 ms 21624 KB Time limit exceeded
80 Execution timed out 1069 ms 21696 KB Time limit exceeded
81 Execution timed out 1077 ms 21624 KB Time limit exceeded
82 Execution timed out 1083 ms 21712 KB Time limit exceeded
83 Execution timed out 1089 ms 21624 KB Time limit exceeded
84 Execution timed out 1064 ms 21624 KB Time limit exceeded
85 Execution timed out 1079 ms 21624 KB Time limit exceeded
86 Execution timed out 1063 ms 21636 KB Time limit exceeded
87 Execution timed out 1076 ms 21728 KB Time limit exceeded
88 Execution timed out 1064 ms 21712 KB Time limit exceeded
89 Execution timed out 1070 ms 21624 KB Time limit exceeded
90 Execution timed out 1086 ms 14456 KB Time limit exceeded
91 Execution timed out 1075 ms 21624 KB Time limit exceeded
92 Execution timed out 1062 ms 21624 KB Time limit exceeded
93 Execution timed out 1065 ms 21704 KB Time limit exceeded
94 Execution timed out 1074 ms 21752 KB Time limit exceeded
95 Execution timed out 1075 ms 21576 KB Time limit exceeded
96 Execution timed out 1075 ms 21624 KB Time limit exceeded
97 Execution timed out 1075 ms 21624 KB Time limit exceeded
98 Execution timed out 1075 ms 21624 KB Time limit exceeded
99 Execution timed out 1075 ms 21624 KB Time limit exceeded
100 Execution timed out 1077 ms 21752 KB Time limit exceeded