oj.uz

Submission #26929

# Submission time Handle Problem Language Result Execution time Memory
26929 2017-07-07T07:59:50 Z kajebiii The Kingdom of JOIOI (JOI17_joioi) C++14
100 / 100
 3089 ms 123784 KB 
#include <stdio.h>
#include <bits/stdc++.h>

using namespace std;

#define SZ(v) ((int)(v).size())
#define ALL(v) (v).begin(),(v).end()
#define one first
#define two second
typedef long long ll;
typedef pair<int, int> pi;
typedef pair<ll, int> pli;
typedef tuple<int, int, int> ti;
const int INF = 0x3f2f1f0f;
const ll LINF = 1ll * INF * INF;

const int MAX_N = 2e3 + 10;

int H, W, Nr[MAX_N][MAX_N], Memo[MAX_N][MAX_N];;
vector<ti> Ts;
vector<int> Co;
int solve() {
	int cN = SZ(Co);
	int minV, mx, my; tie(minV, mx, my) = Ts[0];
	int maxV = get<0>(Ts.back()), tempL = -1;
	for(int i=0; i<=mx; i++) for(int j=0; j<=my; j++) tempL = max(tempL, Nr[i][j]);
	int res = INF;
	for(int l=tempL-minV, r=maxV-minV; l<=r;) {
		int m = (l+r) >> 1;
		int last = W-1;
		int mxV = -1, mnV = INF;
		for(int i=0, now; i<H; i++) {
			now = -1;
			while(now+1 <= last && Nr[i][now+1] - minV <= m) now++;
			last = now;
			for(int j=now+1; j<W; j++) mxV = max(mxV, Nr[i][j]), mnV = min(mnV, Nr[i][j]);
		}
		if(mxV - mnV <= m) res = m, r = m-1; else l = m+1;
	}
//	printf("res : [%d]\n\n", res);
	return res;
}
int main() {
	cin >> H >> W;
	for(int i=0; i<H; i++) for(int j=0; j<W; j++) 
		scanf("%d", &Nr[i][j]), Ts.push_back(ti(Nr[i][j], i, j)), Co.push_back(Nr[i][j]);
	sort(ALL(Ts)); sort(ALL(Co)); Co.erase(unique(ALL(Co)), Co.end());

	int ans = INF;
	for(int o0=0; o0<2; o0++) {
		for(int o1=0; o1<2; o1++) {
			ans = min(ans, solve());
			for(int i=0; i<H; i++) for(int j=0; j<W; j++) Memo[i][j] = Nr[i][j];
			for(int i=0; i<H; i++) for(int j=0; j<W; j++) Nr[i][j] = Memo[i][W-1-j];
			for(ti &e : Ts) get<2>(e) = W-1-get<2>(e);
		}
		for(int i=0; i<H; i++) for(int j=0; j<W; j++) Memo[i][j] = Nr[i][j];
		for(int i=0; i<H; i++) for(int j=0; j<W; j++) Nr[i][j] = Memo[H-1-i][j];
		for(ti &e : Ts) get<1>(e) = H-1-get<1>(e);
	}
	printf("%d\n", ans);
	return 0;
}

Compilation message

joioi.cpp: In function 'int solve()':
joioi.cpp:23:6: warning: unused variable 'cN' [-Wunused-variable]
  int cN = SZ(Co);
      ^
joioi.cpp: In function 'int main()':
joioi.cpp:46:83: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &Nr[i][j]), Ts.push_back(ti(Nr[i][j], i, j)), Co.push_back(Nr[i][j]);
                                                                                   ^

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 33588 KB Output is correct
2 Correct 0 ms 33588 KB Output is correct
3 Correct 0 ms 33588 KB Output is correct
4 Correct 0 ms 33588 KB Output is correct
5 Correct 0 ms 33588 KB Output is correct
6 Correct 0 ms 33588 KB Output is correct
7 Correct 0 ms 33588 KB Output is correct
8 Correct 0 ms 33588 KB Output is correct
9 Correct 0 ms 33588 KB Output is correct
10 Correct 0 ms 33588 KB Output is correct
11 Correct 0 ms 33588 KB Output is correct
12 Correct 0 ms 33588 KB Output is correct
13 Correct 0 ms 33588 KB Output is correct
14 Correct 0 ms 33588 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 33588 KB Output is correct
2 Correct 0 ms 33588 KB Output is correct
3 Correct 0 ms 33588 KB Output is correct
4 Correct 0 ms 33588 KB Output is correct
5 Correct 0 ms 33588 KB Output is correct
6 Correct 0 ms 33588 KB Output is correct
7 Correct 0 ms 33588 KB Output is correct
8 Correct 0 ms 33588 KB Output is correct
9 Correct 0 ms 33588 KB Output is correct
10 Correct 0 ms 33588 KB Output is correct
11 Correct 0 ms 33588 KB Output is correct
12 Correct 0 ms 33588 KB Output is correct
13 Correct 0 ms 33588 KB Output is correct
14 Correct 0 ms 33588 KB Output is correct
15 Correct 0 ms 33760 KB Output is correct
16 Correct 9 ms 35080 KB Output is correct
17 Correct 16 ms 35080 KB Output is correct
18 Correct 16 ms 35080 KB Output is correct
19 Correct 16 ms 35080 KB Output is correct
20 Correct 9 ms 35080 KB Output is correct
21 Correct 23 ms 35080 KB Output is correct
22 Correct 26 ms 35080 KB Output is correct
23 Correct 23 ms 35080 KB Output is correct
24 Correct 16 ms 35080 KB Output is correct
25 Correct 13 ms 35080 KB Output is correct
26 Correct 16 ms 35080 KB Output is correct
27 Correct 13 ms 35080 KB Output is correct
28 Correct 16 ms 35080 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 33588 KB Output is correct
2 Correct 0 ms 33588 KB Output is correct
3 Correct 0 ms 33588 KB Output is correct
4 Correct 0 ms 33588 KB Output is correct
5 Correct 0 ms 33588 KB Output is correct
6 Correct 0 ms 33588 KB Output is correct
7 Correct 0 ms 33588 KB Output is correct
8 Correct 0 ms 33588 KB Output is correct
9 Correct 0 ms 33588 KB Output is correct
10 Correct 0 ms 33588 KB Output is correct
11 Correct 0 ms 33588 KB Output is correct
12 Correct 0 ms 33588 KB Output is correct
13 Correct 0 ms 33588 KB Output is correct
14 Correct 0 ms 33588 KB Output is correct
15 Correct 0 ms 33760 KB Output is correct
16 Correct 9 ms 35080 KB Output is correct
17 Correct 16 ms 35080 KB Output is correct
18 Correct 16 ms 35080 KB Output is correct
19 Correct 16 ms 35080 KB Output is correct
20 Correct 9 ms 35080 KB Output is correct
21 Correct 23 ms 35080 KB Output is correct
22 Correct 26 ms 35080 KB Output is correct
23 Correct 23 ms 35080 KB Output is correct
24 Correct 16 ms 35080 KB Output is correct
25 Correct 13 ms 35080 KB Output is correct
26 Correct 16 ms 35080 KB Output is correct
27 Correct 13 ms 35080 KB Output is correct
28 Correct 16 ms 35080 KB Output is correct
29 Correct 1689 ms 123784 KB Output is correct
30 Correct 1579 ms 123784 KB Output is correct
31 Correct 1846 ms 123784 KB Output is correct
32 Correct 1653 ms 123784 KB Output is correct
33 Correct 1613 ms 123784 KB Output is correct
34 Correct 1719 ms 123784 KB Output is correct
35 Correct 2073 ms 123784 KB Output is correct
36 Correct 1963 ms 123784 KB Output is correct
37 Correct 3089 ms 123784 KB Output is correct