/***Farhan132***/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef double dd;
typedef vector<ll> vll;
typedef pair<ll , ll> ii;
typedef vector< ii > vi;
typedef pair < pair < ll , ll > , pair < ll , ll > > cm;
#define ff first
#define ss second
#define pb push_back
#define in insert
#define f0(b) for(int i=0;i<(b);i++)
#define f00(b) for(int j=0;j<(b);j++)
#define f1(b) for(int i=1;i<=(b);i++)
#define f11(b) for(int j=1;j<=(b);j++)
#define f2(a,b) for(int i=(a);i<=(b);i++)
#define f22(a,b) for(int j=(a);j<=(b);j++)
#define sf(a) scanf("%lld",&a)
#define sff(a,b) scanf("%lld %lld", &a , &b)
#define pf(a) printf("%lld\n",a)
#define pff(a,b) printf("%lld %lld\n", a , b)
#define PI 3.14159265359
#define bug printf("**!\n")
#define mem(a , b) memset(a, b ,sizeof(a))
#define front_zero(n) __builtin_clzll(n)
#define back_zero(n) __builtin_ctzll(n)
#define total_one(n) __builtin_popcountll(n)
#define clean fflush(stdout)
const ll mod = (ll)1e9 + 7;
const ll maxn = (ll)2e5 + 5;
const int nnn = 1048590;
const int inf = numeric_limits<int>::max()-1;
//const ll INF = numeric_limits<ll>::max()-1;
//const ll INF = 1e18;
ll dx[]={0,1,0,-1};
ll dy[]={1,0,-1,0};
ll dxx[]={0,1,0,-1,1,1,-1,-1};
ll dyy[]={1,0,-1,0,1,-1,1,-1};
ll a[2005][2005];
ll b[2005][2005];
ll n , m;
void rotate(){
f1(n){
f11(m) b[i][j] = a[i][j];
}
ll N = m , M = n;
for(ll i = N; i >= 1; i--){
for(ll j = 1; j <= M; j++) a[i][j] = b[j][N - i + 1];
}
swap(n, m);
return;
}
ll mn = 1e12, mx = 0;
bool check(ll x){
ll big = m;
for(ll i = 1; i <= n; i++){
for(ll j = 1; j <= m; j++){
ll ok1 = 0, ok2 = 0;
if(a[i][j] > x) ok1 = 1;
if(a[i][j] < mx-x) ok2 = 1;
if(ok1 && ok2) return 0;
if(j > big){
if(ok2) return 0;
}else{
if(ok1){
big = j - 1;
}
}
}
}
return 1;
}
void solve(){
cin >> n >> m;
for(ll i = 1; i <= n; i++){
for(ll j = 1; j <= m; j++) cin >> a[i][j] , mn = min(mn, a[i][j]);
}
for(ll i = 1; i <= n; i++){
for(ll j = 1; j <= m; j++) a[i][j] -= mn , mx = max(mx, a[i][j]);
}
ll ans = mx;
f1(4){
ll lo = 0, hg = mx, res = 0;
while(lo <= hg){
ll mid = (lo + hg)/2;
if(check(mid)) res = mid , hg = mid-1;
else lo = mid+1;
}
ans = min(ans, res);
rotate();
}
cout << ans;
return;
}
int main() {
#ifdef LOCAL
freopen("in.txt", "r", stdin);
freopen("out.txt", "w", stdout);
#else
// freopen("cbarn2.in", "r", stdin);
// freopen("cbarn2.out", "w", stdout);
ios_base::sync_with_stdio(0); cin.tie(NULL); cout.tie(NULL);
#endif
//cout << fixed << setprecision(10);
// work(maxn);
// mem(b,0);
ll T;
T=1;
//cin >> T;
//scanf("%lld",&T);
// ll CT = 0;
//work();
while(T--){
//cout << "Case " << ++CT <<": " ;
//printf("Case %lld: ",++CT);
solve();
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
7 |
Correct |
1 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
1 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
364 KB |
Output is correct |
11 |
Correct |
1 ms |
364 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
7 |
Correct |
1 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
1 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
364 KB |
Output is correct |
11 |
Correct |
1 ms |
364 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
2 ms |
2028 KB |
Output is correct |
16 |
Correct |
5 ms |
2668 KB |
Output is correct |
17 |
Correct |
9 ms |
2924 KB |
Output is correct |
18 |
Correct |
8 ms |
2924 KB |
Output is correct |
19 |
Correct |
10 ms |
2924 KB |
Output is correct |
20 |
Correct |
10 ms |
2940 KB |
Output is correct |
21 |
Correct |
12 ms |
3052 KB |
Output is correct |
22 |
Correct |
11 ms |
3052 KB |
Output is correct |
23 |
Correct |
16 ms |
3052 KB |
Output is correct |
24 |
Correct |
11 ms |
2924 KB |
Output is correct |
25 |
Correct |
15 ms |
3052 KB |
Output is correct |
26 |
Correct |
11 ms |
3052 KB |
Output is correct |
27 |
Correct |
11 ms |
3052 KB |
Output is correct |
28 |
Correct |
12 ms |
3052 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
7 |
Correct |
1 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
1 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
364 KB |
Output is correct |
11 |
Correct |
1 ms |
364 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
2 ms |
2028 KB |
Output is correct |
16 |
Correct |
5 ms |
2668 KB |
Output is correct |
17 |
Correct |
9 ms |
2924 KB |
Output is correct |
18 |
Correct |
8 ms |
2924 KB |
Output is correct |
19 |
Correct |
10 ms |
2924 KB |
Output is correct |
20 |
Correct |
10 ms |
2940 KB |
Output is correct |
21 |
Correct |
12 ms |
3052 KB |
Output is correct |
22 |
Correct |
11 ms |
3052 KB |
Output is correct |
23 |
Correct |
16 ms |
3052 KB |
Output is correct |
24 |
Correct |
11 ms |
2924 KB |
Output is correct |
25 |
Correct |
15 ms |
3052 KB |
Output is correct |
26 |
Correct |
11 ms |
3052 KB |
Output is correct |
27 |
Correct |
11 ms |
3052 KB |
Output is correct |
28 |
Correct |
12 ms |
3052 KB |
Output is correct |
29 |
Correct |
641 ms |
85356 KB |
Output is correct |
30 |
Correct |
682 ms |
84716 KB |
Output is correct |
31 |
Correct |
713 ms |
86508 KB |
Output is correct |
32 |
Correct |
614 ms |
86252 KB |
Output is correct |
33 |
Correct |
544 ms |
82920 KB |
Output is correct |
34 |
Correct |
727 ms |
86388 KB |
Output is correct |
35 |
Correct |
1059 ms |
101960 KB |
Output is correct |
36 |
Correct |
994 ms |
96628 KB |
Output is correct |
37 |
Correct |
1297 ms |
102092 KB |
Output is correct |