| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 686405 |
2023-01-25T09:02:09 Z |
pragmatist |
Bomb (IZhO17_bomb) |
C++17 |
|
1000 ms |
55604 KB |
/*
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("O3")
#pragma GCC target ("avx2")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("unroll-loops")
*/
#include<bits/stdc++.h>
#define ld long double
#define sz(v) (int)v.size()
#define ll long long
#define pb push_back
#define x first
#define y second
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define nl "\n"
using namespace std;
const int N = (int)25e2 + 7; // make sure this is right
const int M = (int)1e6 + 7;
const int B = 351;
const int inf = (int)2e9 + 7;
const ll INF = (ll)3e18 + 7;
const ll MOD = (ll)1e9 + 7; // make sure this is right
bool bit(int x, int i) {
return x >> i & 1;
}
int mult(int x, int y) {
return 1ll * x * y % MOD;
}
int sum(int x, int y) {
x += y;
if(x >= MOD) x -= MOD;
return x;
}
int n, m, p[N][N], e[N][N];
char a[N][N];
int get(int x1, int y1, int x2, int y2) {
return (p[x2][y2] - p[x1 - 1][y2] - p[x2][y1 - 1] + p[x1 - 1][y1 - 1]);
}
bool may(int x) {
vector<int> v;
for(int h = 1; h <= sqrt(x); ++h) {
if(x % h == 0) {
v.pb(h), v.pb(x / h);
}
}
for(auto h : v) {
int w = x / h;
for(int i = 1; i <= n - h + 1; ++i) {
for(int j = 1; j <= m - w + 1; ++j) {
int ii = i + h - 1, jj = j + w - 1;
int x = get(i, j, ii, jj);
if(x == h * w) {
e[i][j]++;
e[i][jj + 1]--;
e[ii + 1][j]--;
e[ii + 1][jj + 1]++;
}
}
}
for(int i = 1; i <= n; ++i) {
for(int j = 1; j <= m; ++j) {
e[i][j] += e[i - 1][j];
e[i][j] += e[i][j - 1];
e[i][j] -= e[i - 1][j - 1];
}
}
bool ok = 1;
for(int i = 1; i <= n && ok; ++i) {
for(int j = 1; j <= m && ok; ++j) {
if(a[i][j] == '1') {
ok &= (e[i][j] > 0);
}
}
}
for(int i = 1; i <= n; ++i) {
for(int j = 1; j <= m; ++j) {
e[i][j] = 0;
}
}
if(ok) return 1;
}
return 0;
}
void solve() {
cin >> n >> m;
for(int i = 1; i <= n; ++i) {
for(int j = 1; j <= m; ++j) {
cin >> a[i][j];
p[i][j] = p[i - 1][j] + p[i][j - 1] - p[i - 1][j - 1] + (a[i][j] == '1');
}
}
int l = 1, r = n * m, ans = 0;
while(l <= r) {
int mid = (l + r) >> 1;
if(may(mid)) {
ans = mid;
l = mid + 1;
} else
r = mid - 1;
}
cout << ans << "\n";
}
signed main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
int test = 1;
//cin >> test;
for(int i = 1; i <= test; ++i) {
//cout << "Case #" << i << ": ";
solve();
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
468 KB |
Output is correct |
| 3 |
Correct |
17 ms |
26452 KB |
Output is correct |
| 4 |
Correct |
15 ms |
26452 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
340 KB |
Output is correct |
| 7 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 8 |
Incorrect |
0 ms |
468 KB |
Output isn't correct |
| 9 |
Correct |
0 ms |
468 KB |
Output is correct |
| 10 |
Correct |
1 ms |
468 KB |
Output is correct |
| 11 |
Incorrect |
1 ms |
468 KB |
Output isn't correct |
| 12 |
Correct |
0 ms |
468 KB |
Output is correct |
| 13 |
Correct |
0 ms |
468 KB |
Output is correct |
| 14 |
Correct |
1 ms |
468 KB |
Output is correct |
| 15 |
Incorrect |
1 ms |
468 KB |
Output isn't correct |
| 16 |
Incorrect |
1 ms |
468 KB |
Output isn't correct |
| 17 |
Incorrect |
2 ms |
980 KB |
Output isn't correct |
| 18 |
Correct |
2 ms |
980 KB |
Output is correct |
| 19 |
Incorrect |
3 ms |
1364 KB |
Output isn't correct |
| 20 |
Incorrect |
6 ms |
1368 KB |
Output isn't correct |
| 21 |
Correct |
2 ms |
852 KB |
Output is correct |
| 22 |
Incorrect |
3 ms |
1108 KB |
Output isn't correct |
| 23 |
Incorrect |
5 ms |
1364 KB |
Output isn't correct |
| 24 |
Incorrect |
2 ms |
1236 KB |
Output isn't correct |
| 25 |
Incorrect |
5 ms |
1460 KB |
Output isn't correct |
| 26 |
Incorrect |
5 ms |
1364 KB |
Output isn't correct |
| 27 |
Correct |
39 ms |
4052 KB |
Output is correct |
| 28 |
Incorrect |
40 ms |
4180 KB |
Output isn't correct |
| 29 |
Incorrect |
195 ms |
5516 KB |
Output isn't correct |
| 30 |
Incorrect |
187 ms |
6356 KB |
Output isn't correct |
| 31 |
Incorrect |
59 ms |
4948 KB |
Output isn't correct |
| 32 |
Incorrect |
62 ms |
5808 KB |
Output isn't correct |
| 33 |
Incorrect |
148 ms |
6632 KB |
Output isn't correct |
| 34 |
Correct |
46 ms |
4692 KB |
Output is correct |
| 35 |
Incorrect |
138 ms |
6632 KB |
Output isn't correct |
| 36 |
Incorrect |
143 ms |
6636 KB |
Output isn't correct |
| 37 |
Incorrect |
1 ms |
468 KB |
Output isn't correct |
| 38 |
Execution timed out |
1088 ms |
55520 KB |
Time limit exceeded |
| 39 |
Incorrect |
1 ms |
468 KB |
Output isn't correct |
| 40 |
Incorrect |
460 ms |
15576 KB |
Output isn't correct |
| 41 |
Incorrect |
1 ms |
468 KB |
Output isn't correct |
| 42 |
Incorrect |
7 ms |
1364 KB |
Output isn't correct |
| 43 |
Execution timed out |
1091 ms |
55500 KB |
Time limit exceeded |
| 44 |
Incorrect |
209 ms |
6612 KB |
Output isn't correct |
| 45 |
Execution timed out |
1096 ms |
55424 KB |
Time limit exceeded |
| 46 |
Execution timed out |
1081 ms |
55500 KB |
Time limit exceeded |
| 47 |
Execution timed out |
1091 ms |
55544 KB |
Time limit exceeded |
| 48 |
Execution timed out |
1082 ms |
55472 KB |
Time limit exceeded |
| 49 |
Execution timed out |
1096 ms |
55508 KB |
Time limit exceeded |
| 50 |
Execution timed out |
1098 ms |
55504 KB |
Time limit exceeded |
| 51 |
Execution timed out |
1099 ms |
55416 KB |
Time limit exceeded |
| 52 |
Execution timed out |
1096 ms |
55548 KB |
Time limit exceeded |
| 53 |
Execution timed out |
1090 ms |
55500 KB |
Time limit exceeded |
| 54 |
Execution timed out |
1095 ms |
55484 KB |
Time limit exceeded |
| 55 |
Execution timed out |
1102 ms |
55500 KB |
Time limit exceeded |
| 56 |
Execution timed out |
1095 ms |
55408 KB |
Time limit exceeded |
| 57 |
Execution timed out |
1098 ms |
55412 KB |
Time limit exceeded |
| 58 |
Execution timed out |
1095 ms |
55396 KB |
Time limit exceeded |
| 59 |
Execution timed out |
1086 ms |
55396 KB |
Time limit exceeded |
| 60 |
Execution timed out |
1094 ms |
55416 KB |
Time limit exceeded |
| 61 |
Execution timed out |
1093 ms |
55500 KB |
Time limit exceeded |
| 62 |
Execution timed out |
1096 ms |
55500 KB |
Time limit exceeded |
| 63 |
Execution timed out |
1090 ms |
55512 KB |
Time limit exceeded |
| 64 |
Execution timed out |
1098 ms |
55500 KB |
Time limit exceeded |
| 65 |
Execution timed out |
1057 ms |
55420 KB |
Time limit exceeded |
| 66 |
Execution timed out |
1100 ms |
55496 KB |
Time limit exceeded |
| 67 |
Execution timed out |
1089 ms |
55500 KB |
Time limit exceeded |
| 68 |
Execution timed out |
1093 ms |
55472 KB |
Time limit exceeded |
| 69 |
Execution timed out |
1085 ms |
55500 KB |
Time limit exceeded |
| 70 |
Execution timed out |
1099 ms |
44364 KB |
Time limit exceeded |
| 71 |
Execution timed out |
1086 ms |
55500 KB |
Time limit exceeded |
| 72 |
Execution timed out |
1074 ms |
55440 KB |
Time limit exceeded |
| 73 |
Execution timed out |
1099 ms |
55500 KB |
Time limit exceeded |
| 74 |
Execution timed out |
1093 ms |
55500 KB |
Time limit exceeded |
| 75 |
Execution timed out |
1099 ms |
55408 KB |
Time limit exceeded |
| 76 |
Execution timed out |
1090 ms |
55496 KB |
Time limit exceeded |
| 77 |
Execution timed out |
1092 ms |
55476 KB |
Time limit exceeded |
| 78 |
Execution timed out |
1088 ms |
55500 KB |
Time limit exceeded |
| 79 |
Execution timed out |
1097 ms |
55500 KB |
Time limit exceeded |
| 80 |
Execution timed out |
1084 ms |
55480 KB |
Time limit exceeded |
| 81 |
Execution timed out |
1052 ms |
55500 KB |
Time limit exceeded |
| 82 |
Execution timed out |
1093 ms |
55604 KB |
Time limit exceeded |
| 83 |
Execution timed out |
1097 ms |
55524 KB |
Time limit exceeded |
| 84 |
Execution timed out |
1099 ms |
55500 KB |
Time limit exceeded |
| 85 |
Execution timed out |
1089 ms |
55404 KB |
Time limit exceeded |
| 86 |
Execution timed out |
1087 ms |
55500 KB |
Time limit exceeded |
| 87 |
Execution timed out |
1094 ms |
55428 KB |
Time limit exceeded |
| 88 |
Execution timed out |
1090 ms |
55500 KB |
Time limit exceeded |
| 89 |
Execution timed out |
1093 ms |
55412 KB |
Time limit exceeded |
| 90 |
Execution timed out |
1092 ms |
44452 KB |
Time limit exceeded |
| 91 |
Execution timed out |
1090 ms |
55488 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1098 ms |
55432 KB |
Time limit exceeded |
| 93 |
Execution timed out |
1101 ms |
55500 KB |
Time limit exceeded |
| 94 |
Execution timed out |
1090 ms |
55500 KB |
Time limit exceeded |
| 95 |
Execution timed out |
1099 ms |
55464 KB |
Time limit exceeded |
| 96 |
Execution timed out |
1103 ms |
55500 KB |
Time limit exceeded |
| 97 |
Execution timed out |
1060 ms |
55528 KB |
Time limit exceeded |
| 98 |
Execution timed out |
1091 ms |
55376 KB |
Time limit exceeded |
| 99 |
Execution timed out |
1087 ms |
55488 KB |
Time limit exceeded |
| 100 |
Execution timed out |
1068 ms |
55500 KB |
Time limit exceeded |
