oj.uz

Submission #934809

# Submission time Handle Problem Language Result Execution time Memory
934809 2024-02-28T03:26:50 Z Whisper The Kingdom of JOIOI (JOI17_joioi) C++17
100 / 100
 1880 ms 63480 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define int long long
#define FOR(i, a, b) for ( int i = a ; i <= b ; i++ )
#define FORD(i, a, b) for (int i = b; i >= a; i --)
#define REP(i, n) for (int i = 0; i < n; ++i)
#define REPD(i, n) for (int i = n - 1; i >= 0; --i)
#define pii pair<int , int>
#define Lg(x) 31 - __builtin_clz(x)

#define MASK(i) (1LL << (i))
#define BIT(x, i) (((x) >> (i)) & 1)

constexpr ll LINF = (1ll << 60);
constexpr int INF = (1ll << 30);
constexpr int MAX = 2e3 + 5;
constexpr int Mod = 1e9 + 7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

void setupIO(){
    #define name "Whisper"
    //Phu Trong from Nguyen Tat Thanh High School for gifted student
    srand(time(NULL));
    cin.tie(nullptr)->sync_with_stdio(false); cout.tie(nullptr);
    //freopen(name".inp", "r", stdin);
    //freopen(name".out", "w", stdout);
    cout << fixed << setprecision(10);
}

template <class X, class Y>
    bool minimize(X &x, const Y &y){
        X eps = 1e-9;
        if (x > y + eps) {x = y; return 1;}
        return 0;
    }

template <class X, class Y>
    bool maximize(X &x, const Y &y){
        X eps = 1e-9;
        if (x + eps < y) {x = y; return 1;}
        return 0;
    }
int nCol, nRow;
int a[MAX][MAX], b[MAX][MAX];
void print(){
    FOR(i, 1, nRow) FOR(j, 1, nCol) cout << a[i][j] << " \n"[j == nCol];
}
void rot(){
    //table rotation
    for (int i = 1; i <= nRow; ++i){
        for (int j = 1; j <= nCol; ++j){
            b[j][nRow - i + 1] = a[i][j];
        }
    }
    swap(nRow, nCol);
    FOR(i, 1, nRow) FOR(j, 1, nCol) a[i][j] = b[i][j];
//    print();
}
int mn = INF;
void Whisper(){
    cin >> nRow >> nCol;
    FOR(i, 1, nRow) FOR(j, 1, nCol){
        cin >> a[i][j]; minimize(mn, a[i][j]);
    }
    int l = 0, r = 1e9;
    int ans = -1;
//
    auto check = [&](int v){
        for (int dir = 0; dir < 4; ++dir){
            int lst = nCol, mnVal = INF, mxVal = 0;
            for (int i = 1; i <= nRow; ++i){
                for (int j = 1; j <= lst; ++j){
                    if (a[i][j] - mn > v){
                        lst = j - 1; break;
                    }
                }
                for (int j = lst + 1; j <= nCol; ++j){
                    maximize(mxVal, a[i][j]);
                    minimize(mnVal, a[i][j]);
                }
            }
            if(mxVal - mnVal <= v) return 1;
            if (dir < 3) rot();
        }
        return 0;
    };
    while (l <= r){
        int mid = (l + r) >> 1;
        if (check(mid)) r = mid - 1, ans = mid;
        else l = mid + 1;
    }
    cout << ans;
}


signed main(){
    setupIO();
    int Test = 1;
//    cin >> Test;
    for ( int i = 1 ; i <= Test ; i++ ){
        Whisper();
        if (i < Test) cout << '\n';
    }
}

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 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 2 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 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2392 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 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 2 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 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 3 ms 8536 KB Output is correct
16 Correct 4 ms 8540 KB Output is correct
17 Correct 7 ms 8540 KB Output is correct
18 Correct 8 ms 8540 KB Output is correct
19 Correct 9 ms 8540 KB Output is correct
20 Correct 8 ms 8540 KB Output is correct
21 Correct 14 ms 8540 KB Output is correct
22 Correct 12 ms 8540 KB Output is correct
23 Correct 10 ms 8536 KB Output is correct
24 Correct 10 ms 8540 KB Output is correct
25 Correct 10 ms 8740 KB Output is correct
26 Correct 10 ms 8540 KB Output is correct
27 Correct 10 ms 8540 KB Output is correct
28 Correct 10 ms 8540 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 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 2 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 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 3 ms 8536 KB Output is correct
16 Correct 4 ms 8540 KB Output is correct
17 Correct 7 ms 8540 KB Output is correct
18 Correct 8 ms 8540 KB Output is correct
19 Correct 9 ms 8540 KB Output is correct
20 Correct 8 ms 8540 KB Output is correct
21 Correct 14 ms 8540 KB Output is correct
22 Correct 12 ms 8540 KB Output is correct
23 Correct 10 ms 8536 KB Output is correct
24 Correct 10 ms 8540 KB Output is correct
25 Correct 10 ms 8740 KB Output is correct
26 Correct 10 ms 8540 KB Output is correct
27 Correct 10 ms 8540 KB Output is correct
28 Correct 10 ms 8540 KB Output is correct
29 Correct 1235 ms 63300 KB Output is correct
30 Correct 1175 ms 63416 KB Output is correct
31 Correct 1072 ms 63316 KB Output is correct
32 Correct 1016 ms 63480 KB Output is correct
33 Correct 1075 ms 63200 KB Output is correct
34 Correct 1082 ms 63312 KB Output is correct
35 Correct 1880 ms 63300 KB Output is correct
36 Correct 1375 ms 63312 KB Output is correct
37 Correct 1799 ms 63304 KB Output is correct