oj.uz

Submission #233412

# Submission time Handle Problem Language Result Execution time Memory
233412 2020-05-20T12:48:52 Z nicolaalexandra The Kingdom of JOIOI (JOI17_joioi) C++14
60 / 100
 4000 ms 197292 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;

    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;
        s.erase (s.find(a[lin][col]));
        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);
                    s.erase (s.find(a[iv][jv]));
                    minim = min (minim,a[iv][jv]);
                    maxim = max (maxim,a[iv][jv]);
                }}}

        if (s.empty())
            break;

        int val = maxim - minim;
        val = max (val, (*s.rbegin()) - (*s.begin()));
        /*cout<<val<<" "<<lin<<" "<<col<<" "<<(*s.rbegin()) - (*s.begin())<<"\n";
        for (auto it : s)
            cout<<it<<" ";
        cout<<endl;
        */
        sol = min (sol,val);
    }
}


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

void roteste(){

    int idx = 0;
    s.clear();
    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;
            s.insert(a[i][j]);
        }
    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};
            s.insert(a[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:108:11: 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 18 ms 16256 KB Output is correct
8 Correct 19 ms 16256 KB Output is correct
9 Correct 20 ms 16296 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 19 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 18 ms 16256 KB Output is correct
8 Correct 19 ms 16256 KB Output is correct
9 Correct 20 ms 16296 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 19 ms 16256 KB Output is correct
14 Correct 18 ms 16256 KB Output is correct
15 Correct 22 ms 18048 KB Output is correct
16 Correct 74 ms 20600 KB Output is correct
17 Correct 110 ms 21112 KB Output is correct
18 Correct 104 ms 21112 KB Output is correct
19 Correct 108 ms 21112 KB Output is correct
20 Correct 95 ms 20856 KB Output is correct
21 Correct 111 ms 21496 KB Output is correct
22 Correct 108 ms 21368 KB Output is correct
23 Correct 107 ms 21496 KB Output is correct
24 Correct 95 ms 21088 KB Output is correct
25 Correct 112 ms 21396 KB Output is correct
26 Correct 114 ms 21360 KB Output is correct
27 Correct 112 ms 21372 KB Output is correct
28 Correct 110 ms 21368 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 18 ms 16256 KB Output is correct
8 Correct 19 ms 16256 KB Output is correct
9 Correct 20 ms 16296 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 19 ms 16256 KB Output is correct
14 Correct 18 ms 16256 KB Output is correct
15 Correct 22 ms 18048 KB Output is correct
16 Correct 74 ms 20600 KB Output is correct
17 Correct 110 ms 21112 KB Output is correct
18 Correct 104 ms 21112 KB Output is correct
19 Correct 108 ms 21112 KB Output is correct
20 Correct 95 ms 20856 KB Output is correct
21 Correct 111 ms 21496 KB Output is correct
22 Correct 108 ms 21368 KB Output is correct
23 Correct 107 ms 21496 KB Output is correct
24 Correct 95 ms 21088 KB Output is correct
25 Correct 112 ms 21396 KB Output is correct
26 Correct 114 ms 21360 KB Output is correct
27 Correct 112 ms 21372 KB Output is correct
28 Correct 110 ms 21368 KB Output is correct
29 Execution timed out 4090 ms 197292 KB Time limit exceeded
30 Halted 0 ms 0 KB -