oj.uz

Submission #233430

# Submission time Handle Problem Language Result Execution time Memory
233430 2020-05-20T13:48:32 Z nicolaalexandra The Kingdom of JOIOI (JOI17_joioi) C++14
60 / 100
 1514 ms 165748 KB 
#include <bits/stdc++.h>
#define DIM 2010
#define DIMBUFF 30000000
#define INF 2000000000
using namespace std;
int a[DIM][DIM],b[DIM][DIM],viz[DIM][DIM];
struct idk{
    int val,l,c;
} v[DIM*DIM];
pair<int,int> c[DIM*DIM];
int di[] = {-1,1,0,0};
int dj[] = {0,0,-1,1};
int n,m,i,j,sol,mini,maxi,k,pos;
char buff[DIMBUFF];
multiset <int> s;

void solve (){


    /// toate valorile < maxi - val trb puse in zona minimelor

    memset (viz,0,sizeof viz);
    int minim = INF, maxim = 0;
    int pos_mini = 1, pos_maxi = k;
    for (int i=1;i<=k;++i){
        int lin = v[i].l, col = v[i].c;
        if (viz[lin][col])
            continue;

        int p = 1, u = 1;
        c[1] = make_pair(lin,col);
        viz[lin][col] = 1;
        minim = min (minim,a[lin][col]);
        maxim = max (maxim,a[lin][col]);

        while (p <= u){
            int ic = c[p].first;
            int jc = c[p].second;
            p++;
            for (int dir=0;dir<=3;++dir){
                int iv = ic + di[dir];
                int jv = jc + dj[dir];
                if (iv >= lin && iv <= n && jv >= 1 && jv <= col && !viz[iv][jv]){
                    viz[iv][jv] = 1;
                    c[++u] = make_pair(iv,jv);
                    minim = min (minim,a[iv][jv]);
                    maxim = max (maxim,a[iv][jv]);
                }}}

        while (pos_mini <= k && viz[v[pos_mini].l][v[pos_mini].c])
            pos_mini++;

        while (pos_maxi >= 1 && viz[v[pos_maxi].l][v[pos_maxi].c])
            pos_maxi--;

        if (pos_mini > pos_maxi)
            break;

        int val = maxim - minim;
        val = max (val, v[pos_maxi].val - v[pos_mini].val);

        sol = min (sol,val);
    }
}


inline int cmp (idk a, idk b){
    return a.val < b.val;
}

void roteste(){

    int idx = 0;

    for (i=1;i<=n;++i)
        for (j=1;j<=m;++j){
            b[m-j+1][i] = a[i][j];
            idx++;
            int l = v[idx].l, c = v[idx].c;
            v[idx].l = m-c+1;
            v[idx].c = l;
        }
    swap (n,m);

    for (i=1;i<=n;++i)
        for (j=1;j<=m;++j)
            a[i][j] = b[i][j];

}
int get_nr(){
    while (!(buff[pos] >= '0' && buff[pos] <= '9'))
        ++pos;
    int nr = 0;
    while (buff[pos] >= '0' && buff[pos] <= '9'){
        nr = nr*10 + buff[pos] - '0';
        ++pos;
    }
    return nr;
}
int main (){

    //FILE *fin = fopen ("date.in","r");
    //FILE *fout = fopen ("date.out","w");
    FILE *fin = stdin;
    FILE *fout = stdout;

    fread (buff,1,DIMBUFF,fin);
    //cin>>n>>m;
    n = get_nr(), m = get_nr();
    mini = INF;
    for (i=1;i<=n;++i)
        for (j=1;j<=m;++j){
            //cin>>a[i][j];
            a[i][j] = get_nr();
            mini = min (mini,a[i][j]);
            maxi = max (maxi,a[i][j]);
            v[++k] = {a[i][j],i,j};
        }


    sort (v+1,v+k+1,cmp);

    sol = INF;
    solve();

    roteste();
    solve();

    roteste();
    solve();

    roteste();
    solve();

    fprintf(fout,"%d",sol);

    return 0;
}

Compilation message

joioi.cpp: In function 'int main()':
joioi.cpp:107:11: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     fread (buff,1,DIMBUFF,fin);
     ~~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 16256 KB Output is correct
2 Correct 19 ms 16256 KB Output is correct
3 Correct 19 ms 16256 KB Output is correct
4 Correct 19 ms 16256 KB Output is correct
5 Correct 19 ms 16256 KB Output is correct
6 Correct 18 ms 16256 KB Output is correct
7 Correct 19 ms 16256 KB Output is correct
8 Correct 19 ms 16256 KB Output is correct
9 Correct 19 ms 16256 KB Output is correct
10 Correct 19 ms 16256 KB Output is correct
11 Correct 19 ms 16256 KB Output is correct
12 Correct 19 ms 16256 KB Output is correct
13 Correct 18 ms 16256 KB Output is correct
14 Correct 18 ms 16256 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 16256 KB Output is correct
2 Correct 19 ms 16256 KB Output is correct
3 Correct 19 ms 16256 KB Output is correct
4 Correct 19 ms 16256 KB Output is correct
5 Correct 19 ms 16256 KB Output is correct
6 Correct 18 ms 16256 KB Output is correct
7 Correct 19 ms 16256 KB Output is correct
8 Correct 19 ms 16256 KB Output is correct
9 Correct 19 ms 16256 KB Output is correct
10 Correct 19 ms 16256 KB Output is correct
11 Correct 19 ms 16256 KB Output is correct
12 Correct 19 ms 16256 KB Output is correct
13 Correct 18 ms 16256 KB Output is correct
14 Correct 18 ms 16256 KB Output is correct
15 Correct 20 ms 17920 KB Output is correct
16 Correct 27 ms 18816 KB Output is correct
17 Correct 30 ms 19328 KB Output is correct
18 Correct 28 ms 19200 KB Output is correct
19 Correct 30 ms 19328 KB Output is correct
20 Correct 26 ms 19200 KB Output is correct
21 Correct 30 ms 19452 KB Output is correct
22 Correct 28 ms 19328 KB Output is correct
23 Correct 28 ms 19456 KB Output is correct
24 Correct 27 ms 19328 KB Output is correct
25 Correct 28 ms 19328 KB Output is correct
26 Correct 28 ms 19328 KB Output is correct
27 Correct 31 ms 19456 KB Output is correct
28 Correct 28 ms 19456 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 16256 KB Output is correct
2 Correct 19 ms 16256 KB Output is correct
3 Correct 19 ms 16256 KB Output is correct
4 Correct 19 ms 16256 KB Output is correct
5 Correct 19 ms 16256 KB Output is correct
6 Correct 18 ms 16256 KB Output is correct
7 Correct 19 ms 16256 KB Output is correct
8 Correct 19 ms 16256 KB Output is correct
9 Correct 19 ms 16256 KB Output is correct
10 Correct 19 ms 16256 KB Output is correct
11 Correct 19 ms 16256 KB Output is correct
12 Correct 19 ms 16256 KB Output is correct
13 Correct 18 ms 16256 KB Output is correct
14 Correct 18 ms 16256 KB Output is correct
15 Correct 20 ms 17920 KB Output is correct
16 Correct 27 ms 18816 KB Output is correct
17 Correct 30 ms 19328 KB Output is correct
18 Correct 28 ms 19200 KB Output is correct
19 Correct 30 ms 19328 KB Output is correct
20 Correct 26 ms 19200 KB Output is correct
21 Correct 30 ms 19452 KB Output is correct
22 Correct 28 ms 19328 KB Output is correct
23 Correct 28 ms 19456 KB Output is correct
24 Correct 27 ms 19328 KB Output is correct
25 Correct 28 ms 19328 KB Output is correct
26 Correct 28 ms 19328 KB Output is correct
27 Correct 31 ms 19456 KB Output is correct
28 Correct 28 ms 19456 KB Output is correct
29 Correct 1492 ms 131892 KB Output is correct
30 Correct 1412 ms 151288 KB Output is correct
31 Correct 1419 ms 157816 KB Output is correct
32 Correct 1514 ms 165748 KB Output is correct
33 Correct 1220 ms 145784 KB Output is correct
34 Correct 1507 ms 164964 KB Output is correct
35 Incorrect 1446 ms 160372 KB Output isn't correct
36 Halted 0 ms 0 KB -