oj.uz

답안 #530652

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
530652 2022-02-26T07:54:47 Z Killer2501 The Kingdom of JOIOI (JOI17_joioi) C++14
100 / 100
 475 ms 16440 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define ull unsigned long long
#define pb push_back
#define pll pair<ll, ll>
#define pii pair<int, int>
#define fi first
#define se second
using namespace std;
const int N = 2e3+5;
const int M = 250;
const int mod = 1e9+7;
const ll base = 75;
const int inf = 1e9;
int m, n, t, b[N], d[N], lab[N], c[N];
int k, a[N][N], dp[N], lst[N], fe[N];
ll ans, tong;
vector<int> adj[N], g[N];
vector<int> vi;
string s[N];
bool vis[N];
bool cmp(const int& x, const int& y)
{
    return d[x] > d[y];
}

void add(int id, int x)
{
    for(; id; id -= id & -id)fe[id] += x;
}
int get(int id)
{
    int res = 0;
    for(; id <= m; id += id & -id)res += fe[id];
    return res;
}
struct IT
{
    int n;
    vector<int> st;
    IT(int _n)
    {
        n = _n;
        st.resize(n*4+4, 0);
    }
    void build(int id, int l, int r, int pos, int x)
    {
        if(l == r)
        {
            st[id] = max(x, st[id]);
            return;
        }
        int mid = (l+r)>>1;
        if(pos <= mid)build(id<<1, l, mid, pos, x);
        else build(id<<1|1, mid+1, r, pos, x);
        st[id] = max(st[id<<1], st[id<<1|1]);
    }
    void build(int pos, int x)
    {
        build(1, 1, n, pos, x);
    }
    int get(int id, int l, int r, int u, int v)
    {
        if(u <= l && r <= v)return st[id];
        if(u > r || l > v)return 0;
        int mid = (l+r)>>1;
        return max(get(id<<1, l, mid, u, v), get(id<<1|1, mid+1, r, u, v));
    }
    int get(int l, int r)
    {
        return get(1, 1, n, l, r);
    }
};
int mx, mn = inf;
bool check(int x)
{
    bool ok = true;
    for(int i = 1, p = m; i <= n; i ++)
    {
        for(int j = 1; j <= p; j ++)
        {
            if(mx-a[i][j] > x)
            {
                p = j-1;
                break;
            }
        }
        for(int j = p+1; j <= m; j ++)
        {
            if(a[i][j] - mn > x)
            {
                ok = false;
                break;
            }
        }
    }
    if(ok)return true;
    ok = true;
    for(int i = 1, p = 1; i <= n; i ++)
    {
        for(int j = m; j >= p; j --)
        {
            if(mx-a[i][j] > x)
            {
                p = j+1;
                break;
            }
        }
        for(int j = p-1; j > 0; j --)
        {
            if(a[i][j] - mn > x)
            {
                ok = false;
                break;
            }
        }
    }
    if(ok)return true;
    ok = true;
    for(int i = n, p = m; i > 0; i --)
    {
        for(int j = 1; j <= p; j ++)
        {
            if(mx-a[i][j] > x)
            {
                p = j-1;
                break;
            }
        }
        for(int j = p+1; j <= m; j ++)
        {
            if(a[i][j] - mn > x)
            {
                ok = false;
                break;
            }
        }
    }
    if(ok)return true;
    ok = true;
    for(int i = n, p = 1; i > 0; i --)
    {
        for(int j = m; j >= p; j --)
        {
            if(mx-a[i][j] > x)
            {
                p = j+1;
                break;
            }
        }
        for(int j = p-1; j > 0; j --)
        {
            if(a[i][j] - mn > x)
            {
                ok = false;
                break;
            }
        }
    }
    return ok;
}
void sol()
{
    cin >> n >> m;
    for(int i = 1; i <= n; i ++)
        for(int j = 1; j <= m; j ++)
        {
            cin >> a[i][j];
            mx = max(mx, a[i][j]);
            mn = min(mn, a[i][j]);
        }
    int l = 0, r = 1e9, mid;
    while(l <= r)
    {
        mid = (l+r)>>1;
        if(check(mid))r = mid-1;
        else l = mid+1;

    }
    cout << l;
}
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    #define task "test"
    if(fopen(task".inp", "r"))
	{
		freopen(task".inp", "r", stdin);
		freopen(task".out", "w", stdout);
	}
    int test = 1;
    //cin >> test;
    while(test -- > 0)sol();
    return 0;
}

Compilation message

joioi.cpp: In function 'int main()':
joioi.cpp:191:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  191 |   freopen(task".inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
joioi.cpp:192:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  192 |   freopen(task".out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 480 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 484 KB Output is correct
8 Correct 0 ms 460 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 0 ms 460 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 476 KB Output is correct
14 Correct 1 ms 480 KB Output is correct

Subtask #2
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 480 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 484 KB Output is correct
8 Correct 0 ms 460 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 0 ms 460 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 476 KB Output is correct
14 Correct 1 ms 480 KB Output is correct
15 Correct 1 ms 484 KB Output is correct
16 Correct 3 ms 1388 KB Output is correct
17 Correct 5 ms 1648 KB Output is correct
18 Correct 6 ms 1612 KB Output is correct
19 Correct 6 ms 1648 KB Output is correct
20 Correct 5 ms 1476 KB Output is correct
21 Correct 11 ms 1744 KB Output is correct
22 Correct 6 ms 1760 KB Output is correct
23 Correct 9 ms 1748 KB Output is correct
24 Correct 6 ms 1640 KB Output is correct
25 Correct 6 ms 1752 KB Output is correct
26 Correct 6 ms 1748 KB Output is correct
27 Correct 7 ms 1740 KB Output is correct
28 Correct 7 ms 1708 KB Output is correct

Subtask #3
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 480 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 460 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 484 KB Output is correct
8 Correct 0 ms 460 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 0 ms 460 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 476 KB Output is correct
14 Correct 1 ms 480 KB Output is correct
15 Correct 1 ms 484 KB Output is correct
16 Correct 3 ms 1388 KB Output is correct
17 Correct 5 ms 1648 KB Output is correct
18 Correct 6 ms 1612 KB Output is correct
19 Correct 6 ms 1648 KB Output is correct
20 Correct 5 ms 1476 KB Output is correct
21 Correct 11 ms 1744 KB Output is correct
22 Correct 6 ms 1760 KB Output is correct
23 Correct 9 ms 1748 KB Output is correct
24 Correct 6 ms 1640 KB Output is correct
25 Correct 6 ms 1752 KB Output is correct
26 Correct 6 ms 1748 KB Output is correct
27 Correct 7 ms 1740 KB Output is correct
28 Correct 7 ms 1708 KB Output is correct
29 Correct 352 ms 15432 KB Output is correct
30 Correct 308 ms 16156 KB Output is correct
31 Correct 370 ms 16132 KB Output is correct
32 Correct 330 ms 16212 KB Output is correct
33 Correct 363 ms 14292 KB Output is correct
34 Correct 319 ms 16268 KB Output is correct
35 Correct 475 ms 16440 KB Output is correct
36 Correct 425 ms 16180 KB Output is correct
37 Correct 433 ms 16200 KB Output is correct