oj.uz

Submission #1005668

# Submission time Handle Problem Language Result Execution time Memory
1005668 2024-06-22T18:01:49 Z dimashhh The Kingdom of JOIOI (JOI17_joioi) C++17
100 / 100
 1062 ms 70996 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
 
const int  N = 2e3 + 2, MOD = (int)1e9 + 7;

int n,m,a[N][N],b[N][N];
void rot(){
    for(int i = 1;i <= n;i++){
        for(int j = 1;j <= m;j++){
            a[m - j + 1][i] = b[i][j];
        }
    }
    swap(n,m);
    for(int i = 1;i <= n;i++){
        for(int j = 1;j <= m;j++){
            b[i][j] = a[i][j];
        }
    }
}
int mn = 1e9;
int it[N];
bool check(int mid){
    int l = mn,r = l + mid;
    it[0] = m;
    for(int i = 1;i <= n;i++){
        it[i] = 0;
        for(int j = 1;j <= it[i - 1] && a[i][j] >= l && a[i][j] <= r;j++){
            it[i] = j;
        }
    }
    int mn = 1e9,mx = -1e9;
    for(int i = 1;i <= n;i++){
        for(int j = it[i] + 1;j <= m;j++){
            mn = min(mn,a[i][j]);
            mx = max(mx,a[i][j]);
        }
    }
    return (mx - mn <= mid);
}
bool ok(int mid){
    bool res = false;
    for(int i = 0;i < 4;i++){
        if(check(mid)){
            res = 1;
        }
        rot();
    }
    return res;
}
void test(){
    cin >> n >> m;
    for(int i = 1;i <= n;i++){
        for(int j = 1;j <= m;++j){
            cin >> a[i][j];
            b[i][j] = a[i][j];
            mn = min(mn,a[i][j]);
        }
    }
    int l = -1,r = 1e9 + 1;
    while(r - l > 1){
        int mid = (l + r) >> 1;
        if(ok(mid)){
            r = mid;
        }else{
            l = mid;
        }
        // cout << mid << ' ' << ok(mid) << ' ' << check(mid) << '\n';
    }
    cout << r << '\n';
}
int main() {
    ios_base::sync_with_stdio(false);cin.tie(0);
    int t = 1;
    // cin >> t;
    while(t--){
        test();
    }
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 1 ms 6744 KB Output is correct
16 Correct 8 ms 6492 KB Output is correct
17 Correct 9 ms 6492 KB Output is correct
18 Correct 9 ms 6728 KB Output is correct
19 Correct 9 ms 6744 KB Output is correct
20 Correct 11 ms 6492 KB Output is correct
21 Correct 10 ms 6732 KB Output is correct
22 Correct 9 ms 6488 KB Output is correct
23 Correct 10 ms 6492 KB Output is correct
24 Correct 8 ms 6492 KB Output is correct
25 Correct 10 ms 6488 KB Output is correct
26 Correct 10 ms 6492 KB Output is correct
27 Correct 10 ms 6492 KB Output is correct
28 Correct 9 ms 6492 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 1 ms 6744 KB Output is correct
16 Correct 8 ms 6492 KB Output is correct
17 Correct 9 ms 6492 KB Output is correct
18 Correct 9 ms 6728 KB Output is correct
19 Correct 9 ms 6744 KB Output is correct
20 Correct 11 ms 6492 KB Output is correct
21 Correct 10 ms 6732 KB Output is correct
22 Correct 9 ms 6488 KB Output is correct
23 Correct 10 ms 6492 KB Output is correct
24 Correct 8 ms 6492 KB Output is correct
25 Correct 10 ms 6488 KB Output is correct
26 Correct 10 ms 6492 KB Output is correct
27 Correct 10 ms 6492 KB Output is correct
28 Correct 9 ms 6492 KB Output is correct
29 Correct 874 ms 31804 KB Output is correct
30 Correct 856 ms 53484 KB Output is correct
31 Correct 863 ms 55120 KB Output is correct
32 Correct 923 ms 54864 KB Output is correct
33 Correct 813 ms 51764 KB Output is correct
34 Correct 841 ms 55120 KB Output is correct
35 Correct 1000 ms 70480 KB Output is correct
36 Correct 910 ms 65428 KB Output is correct
37 Correct 1062 ms 70996 KB Output is correct