oj.uz

Submission #233452

# Submission time Handle Problem Language Result Execution time Memory
233452 2020-05-20T14:41:22 Z nicolaalexandra The Kingdom of JOIOI (JOI17_joioi) C++14
60 / 100
 1451 ms 126968 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_linii(){
    for (i=1;i<=n/2;i++)
        for (j=1;j<=m;j++)
            swap (a[i][j],a[n-i+1][j]);

    for (i=1;i<=k;i++)
        v[i].l = n - v[i].l + 1;
}
void roteste_coloane(){
    for (i=1;i<=n;i++)
        for (j=1;j<=m/2;j++)
            swap (a[i][j],a[i][m-j+1]);

    for (i=1;i<=k;i++)
        v[i].c = m - v[i].c + 1;
}
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_linii();
    solve();

    roteste_coloane();
    solve();

    roteste_linii();
    solve();

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

    return 0;
}

Compilation message

joioi.cpp: In function 'int main()':
joioi.cpp:104:11: 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 16128 KB Output is correct
2 Correct 18 ms 16128 KB Output is correct
3 Correct 17 ms 16256 KB Output is correct
4 Correct 18 ms 16256 KB Output is correct
5 Correct 18 ms 16256 KB Output is correct
6 Correct 18 ms 16256 KB Output is correct
7 Correct 18 ms 16256 KB Output is correct
8 Correct 18 ms 16256 KB Output is correct
9 Correct 18 ms 16256 KB Output is correct
10 Correct 18 ms 16216 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 16128 KB Output is correct
2 Correct 18 ms 16128 KB Output is correct
3 Correct 17 ms 16256 KB Output is correct
4 Correct 18 ms 16256 KB Output is correct
5 Correct 18 ms 16256 KB Output is correct
6 Correct 18 ms 16256 KB Output is correct
7 Correct 18 ms 16256 KB Output is correct
8 Correct 18 ms 16256 KB Output is correct
9 Correct 18 ms 16256 KB Output is correct
10 Correct 18 ms 16216 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 18 ms 16256 KB Output is correct
16 Correct 24 ms 17792 KB Output is correct
17 Correct 27 ms 18048 KB Output is correct
18 Correct 27 ms 18048 KB Output is correct
19 Correct 27 ms 18048 KB Output is correct
20 Correct 26 ms 17920 KB Output is correct
21 Correct 27 ms 18296 KB Output is correct
22 Correct 27 ms 18048 KB Output is correct
23 Correct 27 ms 18304 KB Output is correct
24 Correct 26 ms 18048 KB Output is correct
25 Correct 27 ms 18176 KB Output is correct
26 Correct 28 ms 18168 KB Output is correct
27 Correct 27 ms 18304 KB Output is correct
28 Correct 28 ms 18168 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 16128 KB Output is correct
2 Correct 18 ms 16128 KB Output is correct
3 Correct 17 ms 16256 KB Output is correct
4 Correct 18 ms 16256 KB Output is correct
5 Correct 18 ms 16256 KB Output is correct
6 Correct 18 ms 16256 KB Output is correct
7 Correct 18 ms 16256 KB Output is correct
8 Correct 18 ms 16256 KB Output is correct
9 Correct 18 ms 16256 KB Output is correct
10 Correct 18 ms 16216 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 18 ms 16256 KB Output is correct
16 Correct 24 ms 17792 KB Output is correct
17 Correct 27 ms 18048 KB Output is correct
18 Correct 27 ms 18048 KB Output is correct
19 Correct 27 ms 18048 KB Output is correct
20 Correct 26 ms 17920 KB Output is correct
21 Correct 27 ms 18296 KB Output is correct
22 Correct 27 ms 18048 KB Output is correct
23 Correct 27 ms 18304 KB Output is correct
24 Correct 26 ms 18048 KB Output is correct
25 Correct 27 ms 18176 KB Output is correct
26 Correct 28 ms 18168 KB Output is correct
27 Correct 27 ms 18304 KB Output is correct
28 Correct 28 ms 18168 KB Output is correct
29 Correct 1283 ms 115348 KB Output is correct
30 Correct 1297 ms 114132 KB Output is correct
31 Correct 1414 ms 119032 KB Output is correct
32 Correct 1405 ms 126968 KB Output is correct
33 Correct 1123 ms 108408 KB Output is correct
34 Correct 1451 ms 126200 KB Output is correct
35 Incorrect 1389 ms 126132 KB Output isn't correct
36 Halted 0 ms 0 KB -