oj.uz

Submission #670477

# Submission time Handle Problem Language Result Execution time Memory
670477 2022-12-09T08:04:34 Z radal The Kingdom of JOIOI (JOI17_joioi) C++17
60 / 100
 4000 ms 198240 KB 
#include <bits/stdc++.h>
#pragma GCC target("sse,sse2,avx2")
#pragma GCC optimize("unroll-loops,O2")
#define rep(i,l,r) for (int i = l; i < r; i++)
#define repr(i,r,l) for (int i = r; i >= l; i--)
#define X first
#define Y second
#define all(x) (x).begin() , (x).end()
#define pb push_back
#define endl '\n'
#define debug(x) cerr << #x << " : " << x << endl;
using namespace std;
typedef long long ll;
typedef pair<int,int> pll;
constexpr int N = 2e3+10,mod = 1e9+7,maxm = 210;
constexpr ll inf = 1e9+10;
inline int mkay(int a,int b){
    if (a+b >= mod) return a+b-mod;
   // if (a+b < 0) return a+b+mod;
    return a+b;
}
 
inline int poww(int a,int k){
    if (k < 0) return 0;
    int z = 1;
    while (k){
        if (k&1) z = 1ll*z*a%mod;
        a = 1ll*a*a%mod;
        k >>= 1;
    } 
    return z; 
}
 

int h,w,l[N];
int a[N][N],b[N][N];
int ans,sz,mi;
bool on[N][N];
multiset<int> st;
vector<pll> ve;

bool cmp(pll q,pll p){
	return (a[p.X][p.Y] > a[q.X][q.Y]);
}

void rlx(int x){
	if (l[x] == l[x+1] || !on[x][l[x]+1]) return;
	while (l[x] < l[x+1] && on[x][l[x]+1]){
		l[x]++;
		st.erase(st.find(a[x][l[x]]));
	}
	if (x) rlx(x-1);
}

void rst(){
	rep(i,1,h+1){
		rep(j,1,l[i]+1)
			st.insert(a[i][j]);
	}
	rep(i,1,h+1){
		l[i] = 0;
		rep(j,1,w+1){
			a[i][j] = b[i][j];
			on[i][j] = 0;
		}
	}
}

void calc(){
    rep(i,0,sz-1){
        int x = ve[i].X,y = ve[i].Y;
        if (a[x][y]-mi >= ans) break;
        on[x][y] = 1;
        rlx(x);
        if ((int)st.size() == sz) continue;
        ans = min(ans,max(a[x][y]-mi,(*st.rbegin())-(*st.begin())));
    }
}

int main(){
	ios :: sync_with_stdio(0); cin.tie(0); 
	cin >> h >> w;
	rep(i,1,h+1){
		rep(j,1,w+1){
			cin >> a[i][j];
			b[i][j] = a[i][j];
			st.insert(a[i][j]);
			ve.pb({i,j});
		}
	}
	l[h+1] = w;
	ans = (*st.rbegin())-(*st.begin());
	sort(all(ve),cmp);
	sz = h*w;
	mi = a[ve[0].X][ve[0].Y];

	calc();
	rst(); 

	rep(i,1,h+1){
		if (h-i+1 <= i) break;
		rep(j,1,w+1)
			swap(a[i][j],a[h-i+1][j]);
	}

	rep(i,0,sz){
	   	ve[i].X = h-ve[i].X+1;
	}

	calc();
	rst();

	rep(j,1,w+1){
		if (w-j+1 <= j) break;
		rep(i,1,h+1)
			swap(a[i][j],a[i][w-j+1]);
	}

	rep(i,0,sz){
	   	ve[i].Y = w-ve[i].Y+1;
		ve[i].X = h-ve[i].X+1;
	}

	calc();
	rst();

    rep(i,1,h+1){
        if (h-i+1 <= i) break;
        rep(j,1,w+1)
            swap(a[i][j],a[h-i+1][j]);
    }
    rep(j,1,w+1){
        if (w-j+1 <= j) break;
        rep(i,1,h+1)
            swap(a[i][j],a[i][w-j+1]);
    }

	rep(i,0,sz){
		ve[i].X = h-ve[i].X+1;
	}

	calc();
	cout << ans << endl;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 13 ms 4556 KB Output is correct
17 Correct 37 ms 4812 KB Output is correct
18 Correct 35 ms 4752 KB Output is correct
19 Correct 41 ms 4956 KB Output is correct
20 Correct 39 ms 4300 KB Output is correct
21 Correct 54 ms 4812 KB Output is correct
22 Correct 43 ms 4844 KB Output is correct
23 Correct 43 ms 4884 KB Output is correct
24 Correct 29 ms 4264 KB Output is correct
25 Correct 45 ms 4812 KB Output is correct
26 Correct 29 ms 4872 KB Output is correct
27 Correct 45 ms 4876 KB Output is correct
28 Correct 50 ms 4812 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 13 ms 4556 KB Output is correct
17 Correct 37 ms 4812 KB Output is correct
18 Correct 35 ms 4752 KB Output is correct
19 Correct 41 ms 4956 KB Output is correct
20 Correct 39 ms 4300 KB Output is correct
21 Correct 54 ms 4812 KB Output is correct
22 Correct 43 ms 4844 KB Output is correct
23 Correct 43 ms 4884 KB Output is correct
24 Correct 29 ms 4264 KB Output is correct
25 Correct 45 ms 4812 KB Output is correct
26 Correct 29 ms 4872 KB Output is correct
27 Correct 45 ms 4876 KB Output is correct
28 Correct 50 ms 4812 KB Output is correct
29 Execution timed out 4081 ms 198240 KB Time limit exceeded
30 Halted 0 ms 0 KB -