oj.uz

Submission #205595

# Submission time Handle Problem Language Result Execution time Memory
205595 2020-02-29T09:22:09 Z Kastanda The Kingdom of JOIOI (JOI17_joioi) C++11
60 / 100
 4000 ms 39480 KB 
// In The Name Of The Queen
#include<bits/stdc++.h>
using namespace std;
const int N = 2019, INF = 1e9 + 1;
int n, m, A[N][N], P[N], S[N], B[N];
pair < int , int > At[2];
int Val[2];
inline int Solve(int md)
{
    for (int w = 0; w <= 1; w ++)
    {
        P[0] = 0; S[m + 1] = INF;
        for (int i = 1; i <= n; i ++)
        {
            for (int j = 1; j <= m; j ++)
                P[j] = max(P[j - 1], A[i][j]);
            for (int j = m; j; j --)
                S[j] = min(S[j + 1], A[i][j]);
            B[i] = m + 1;
            int l = B[i - 1], r = m;
            if (At[0].first == i)
                l = max(l, At[0].second);
            if (At[1].first == i)
                r = min(r, At[1].second - 1);
            for (int j = l; j <= r; j ++)
            {
                if (P[j] - Val[0] > md)
                    break;
                if (Val[1] - S[j + 1] > md)
                    continue;
                B[i] = j;
                break;
            }
        }
        if (B[n] <= m)
            return 1;
        for (int i = 1; i <= n; i ++)
            for (int j = 1; j <= m; j ++)
                A[i][j] = INF - A[i][j];
        Val[0] = INF - Val[0];
        Val[1] = INF - Val[1];
        swap(Val[0], Val[1]);
        swap(At[0], At[1]);
    }
    return 0;
}
inline int Run()
{
    Val[0] = INT_MAX;
    Val[1] = INT_MIN;
    for (int i = 1; i <= n; i ++)
        for (int j = 1; j <= m; j ++)
        {
            if (Val[0] > A[i][j])
                Val[0] = A[i][j], At[0] = {i, j};
            if (Val[1] < A[i][j])
                Val[1] = A[i][j], At[1] = {i, j};
        }
    int le = -1, ri = (int)(1e9), md;
    while (ri - le > 1)
    {
        md = (le + ri) >> 1;
        if (Solve(md))
            ri = md;
        else
            le = md;
    }
    return (ri);
}
int main()
{
    scanf("%d%d", &n, &m);
    for (int i = 1; i <= n; i ++)
        for (int j = 1; j <= m; j ++)
            scanf("%d", &A[i][j]);
    int Mn = Run();
    for (int i = 1; i < n - i + 1; i ++)
        for (int j = 1; j <= m; j ++)
            swap(A[i][j], A[n - i + 1][j]);
    Mn = min(Mn, Run());
    return !printf("%d\n", Mn);
}

Compilation message

joioi.cpp: In function 'int main()':
joioi.cpp:72:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~
joioi.cpp:75:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &A[i][j]);
             ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 248 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 380 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 372 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 376 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 248 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 380 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 372 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 6 ms 376 KB Output is correct
16 Correct 29 ms 1404 KB Output is correct
17 Correct 38 ms 1528 KB Output is correct
18 Correct 38 ms 1632 KB Output is correct
19 Correct 36 ms 1528 KB Output is correct
20 Correct 33 ms 1400 KB Output is correct
21 Correct 46 ms 1656 KB Output is correct
22 Correct 47 ms 1740 KB Output is correct
23 Correct 43 ms 1656 KB Output is correct
24 Correct 41 ms 1528 KB Output is correct
25 Correct 44 ms 1656 KB Output is correct
26 Correct 47 ms 1656 KB Output is correct
27 Correct 46 ms 1656 KB Output is correct
28 Correct 47 ms 1656 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 248 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 380 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 372 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 6 ms 376 KB Output is correct
16 Correct 29 ms 1404 KB Output is correct
17 Correct 38 ms 1528 KB Output is correct
18 Correct 38 ms 1632 KB Output is correct
19 Correct 36 ms 1528 KB Output is correct
20 Correct 33 ms 1400 KB Output is correct
21 Correct 46 ms 1656 KB Output is correct
22 Correct 47 ms 1740 KB Output is correct
23 Correct 43 ms 1656 KB Output is correct
24 Correct 41 ms 1528 KB Output is correct
25 Correct 44 ms 1656 KB Output is correct
26 Correct 47 ms 1656 KB Output is correct
27 Correct 46 ms 1656 KB Output is correct
28 Correct 47 ms 1656 KB Output is correct
29 Correct 3100 ms 37488 KB Output is correct
30 Correct 2966 ms 37760 KB Output is correct
31 Correct 3094 ms 39400 KB Output is correct
32 Correct 3171 ms 39160 KB Output is correct
33 Correct 2802 ms 34412 KB Output is correct
34 Correct 3117 ms 39480 KB Output is correct
35 Execution timed out 4006 ms 33528 KB Time limit exceeded
36 Halted 0 ms 0 KB -