oj.uz

Submission #801629

# Submission time Handle Problem Language Result Execution time Memory
801629 2023-08-02T07:00:24 Z 반딧불(#10089) Cultivation (JOI17_cultivation) C++17
80 / 100
 660 ms 1432 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
const int INF = 2e9;

ll n, m; int k;
ll X[302], Y[302];
int rx[302], ry[302], sx, sy;
ll ans = LLONG_MAX;

struct Event{
    ll x, y, v;
    Event(){}
    Event(ll x, ll y, ll v): x(x), y(y), v(v){}
    bool operator<(const Event &r)const{
        if(x!=r.x) return x<r.x;
        return v > r.v;
    }
} vec[1002];

struct Interval{
    ll l, r; /// ���� ����
    ll ldist, rdist, mdist; /// �ּ� ����
    Interval(){}
    Interval(ll l, ll r, ll ldist, ll rdist, ll mdist): l(l), r(r), ldist(ldist), rdist(rdist), mdist(mdist){}
    bool operator<(const Interval &nxt)const{
        return l<nxt.l;
    }
};

vector<ll> vx, vy;
struct diffTree{
    int cnt[1024];
    ll lv[1024], rv[1024], diff[1024];

    inline void merge(int i){
        cnt[i] = cnt[i*2] + cnt[i*2+1];
        lv[i] = min(lv[i*2], lv[i*2+1]);
        rv[i] = max(rv[i*2], rv[i*2+1]);
        diff[i] = max({diff[i*2], diff[i*2+1], (cnt[i*2] && cnt[i*2+1]) ? (lv[i*2+1] - rv[i*2] - 1) : 0});
    }

    inline void init(int i, int l, int r){
        if(l==r){
            cnt[i] = 0;
            lv[i] = INF, rv[i] = 0, diff[i] = 0;
            return;
        }
        int m = (l+r)>>1;
        init(i*2, l, m);
        init(i*2+1, m+1, r);
        merge(i);
    }

    inline void update(int i, int l, int r, int x, int v){
        if(l==r){
            cnt[i] += v;
            if(!cnt[i]) lv[i] = INF, rv[i] = 0, diff[i] = 0;
            else lv[i] = rv[i] = vy[l-1], diff[i] = 0;
            return;
        }
        int m = (l+r)>>1;
        if(x<=m) update(i*2, l, m, x, v);
        else update(i*2+1, m+1, r, x, v);
        merge(i);
    }
} difftree;

void renumber(){
    vx = vector<ll> (X+1, X+k+1);
    vy = vector<ll> (Y+1, Y+k+1);
    sort(vx.begin(), vx.end());
    vx.erase(unique(vx.begin(), vx.end()), vx.end());
    sort(vy.begin(), vy.end());
    vy.erase(unique(vy.begin(), vy.end()), vy.end());
    sx = (int)vx.size(), sy = (int)vy.size();
    for(int i=1; i<=k; i++){
        rx[i] = lower_bound(vx.begin(), vx.end(), X[i]) - vx.begin() + 1;
        ry[i] = lower_bound(vy.begin(), vy.end(), Y[i]) - vy.begin() + 1;
    }
}

pair<ll, int> dqL[1002], dqR[1002], dqLen[1002];
int l1, l2, r1, r2, len1, len2;

Interval info[1002];
int infoCnt;

ll udlength[500002], udsize;

int main(){
    scanf("%lld %lld %d", &n, &m, &k);
//    n=m=1000000000, k=300;
    for(int i=1; i<=k; i++){
        scanf("%lld %lld", &X[i], &Y[i]);
//        X[i] = Y[i] = i*i+i+2;
    }
    renumber();

    udlength[udsize++] = n-1;
    for(int i=1; i<=k; i++){
        udlength[udsize++] = X[i] - 1;
        udlength[udsize++] = n - X[i];
        for(int j=1; j<=k; j++){
            if(X[i] < X[j]) udlength[udsize++] = X[j] - X[i] - 1;
            udlength[udsize++] = X[i] + n - X[j] - 1;
        }
    }
    sort(udlength, udlength+udsize);
    udsize = unique(udlength, udlength+udsize) - udlength;

    for(int ui=0; ui<udsize; ui++){ /// �� - �Ʒ� ����
        ll ud = udlength[ui];
        if(ud<0) continue;

        for(int i=1; i<=k; i++){
            vec[i*2-2] = Event(X[i], ry[i], 1);
            vec[i*2-1] = Event(X[i]+ud+1, ry[i], -1);
        }
        sort(vec, vec+k+k);

        infoCnt = 0;
        if(n<=40 || k<=100) difftree.init(1, 1, sy);
        bool bad = 0;

        for(int s=0; s<k+k; s++){
            int e = s;
            while(e+1 < k+k && vec[e+1].x == vec[s].x) e++;
            if(e+1 == k+k) break;

            /// [s, e] ���� �������� ó��
            if(n<=40 || k<=100) for(int i=s; i<=e; i++){
                if(vec[i].v == 1) difftree.update(1, 1, sy, vec[i].y, 1);
                else difftree.update(1, 1, sy, vec[i].y, -1);
            }

            /// ��� ������ �Ѿ
            if(difftree.cnt[1] == 0){
                bad = 1;
                break;
            }

            info[infoCnt++] = Interval(vec[s].x, vec[e+1].x-1, difftree.lv[1] - 1, m - difftree.rv[1], difftree.diff[1]);
            s = e;
        }
        if(bad || !infoCnt) continue;

        int j = 0;
        l1 = l2 = r1 = r2 = len1 = len2 = 0;
        dqL[l2++] = make_pair(info[0].ldist, 0);
        dqR[r2++] = make_pair(info[0].rdist, 0);
        dqLen[len2++] = make_pair(info[0].mdist, 0);

        for(int i=0; i<infoCnt; i++){
            if(l1!=l2 && dqL[l1].second < i) l1++;
            if(r1!=r2 && dqR[r1].second < i) r1++;
            if(len1!=len2 && dqLen[len1].second < i) len1++;
            while(j < infoCnt && info[j].r - info[i].l + 1 < n){
                j++;
                while(l1!=l2 && dqL[l2-1].first <= info[j].ldist) l2--;
                dqL[l2++] = make_pair(info[j].ldist, j);
                while(r1!=r2 && dqR[r2-1].first <= info[j].rdist) r2--;
                dqR[r2++] = make_pair(info[j].rdist, j);
                while(len1!=len2 && dqLen[len2-1].first <= info[j].mdist) len2--;
                dqLen[len2++] = make_pair(info[j].mdist, j);
            }
            if(j == infoCnt) break;
            ll minL = dqL[l1].first, minR = dqR[r1].first, len = dqLen[len1].first;
            ans = min(ans, ud + max(len, minL+minR));
        }
    }

    printf("%lld", ans);
}

Compilation message

cultivation.cpp: In function 'int main()':
cultivation.cpp:94:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   94 |     scanf("%lld %lld %d", &n, &m, &k);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
cultivation.cpp:97:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   97 |         scanf("%lld %lld", &X[i], &Y[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 3 ms 528 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 5 ms 724 KB Output is correct
25 Correct 3 ms 596 KB Output is correct
26 Correct 9 ms 1420 KB Output is correct
27 Correct 9 ms 1420 KB Output is correct
28 Correct 5 ms 724 KB Output is correct
29 Correct 8 ms 1364 KB Output is correct
30 Correct 9 ms 1364 KB Output is correct
31 Correct 9 ms 1364 KB Output is correct
32 Correct 9 ms 1364 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 3 ms 528 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 5 ms 724 KB Output is correct
25 Correct 3 ms 596 KB Output is correct
26 Correct 9 ms 1420 KB Output is correct
27 Correct 9 ms 1420 KB Output is correct
28 Correct 5 ms 724 KB Output is correct
29 Correct 8 ms 1364 KB Output is correct
30 Correct 9 ms 1364 KB Output is correct
31 Correct 9 ms 1364 KB Output is correct
32 Correct 9 ms 1364 KB Output is correct
33 Correct 2 ms 1236 KB Output is correct
34 Correct 12 ms 1364 KB Output is correct
35 Correct 10 ms 1364 KB Output is correct
36 Correct 13 ms 1372 KB Output is correct
37 Correct 11 ms 1376 KB Output is correct
38 Correct 12 ms 1432 KB Output is correct
39 Correct 11 ms 1364 KB Output is correct
40 Correct 11 ms 1364 KB Output is correct
41 Correct 7 ms 1236 KB Output is correct
42 Correct 9 ms 1296 KB Output is correct
43 Correct 10 ms 1392 KB Output is correct
44 Correct 10 ms 1368 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 3 ms 340 KB Output is correct
3 Correct 3 ms 340 KB Output is correct
4 Correct 3 ms 340 KB Output is correct
5 Correct 3 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 3 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 4 ms 340 KB Output is correct
11 Correct 4 ms 364 KB Output is correct
12 Correct 4 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 3 ms 340 KB Output is correct
17 Correct 4 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 3 ms 340 KB Output is correct
20 Correct 3 ms 340 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 3 ms 340 KB Output is correct
3 Correct 3 ms 340 KB Output is correct
4 Correct 3 ms 340 KB Output is correct
5 Correct 3 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 3 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 4 ms 340 KB Output is correct
11 Correct 4 ms 364 KB Output is correct
12 Correct 4 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 3 ms 340 KB Output is correct
17 Correct 4 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 3 ms 340 KB Output is correct
20 Correct 3 ms 340 KB Output is correct
21 Correct 134 ms 468 KB Output is correct
22 Correct 219 ms 468 KB Output is correct
23 Correct 217 ms 468 KB Output is correct
24 Correct 176 ms 468 KB Output is correct
25 Correct 220 ms 468 KB Output is correct
26 Correct 80 ms 468 KB Output is correct
27 Correct 229 ms 460 KB Output is correct
28 Correct 220 ms 468 KB Output is correct
29 Correct 206 ms 468 KB Output is correct
30 Correct 229 ms 468 KB Output is correct
31 Correct 234 ms 468 KB Output is correct
32 Correct 212 ms 468 KB Output is correct
33 Correct 213 ms 468 KB Output is correct
34 Correct 227 ms 468 KB Output is correct
35 Correct 233 ms 468 KB Output is correct
36 Correct 228 ms 464 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 3 ms 528 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 5 ms 724 KB Output is correct
25 Correct 3 ms 596 KB Output is correct
26 Correct 9 ms 1420 KB Output is correct
27 Correct 9 ms 1420 KB Output is correct
28 Correct 5 ms 724 KB Output is correct
29 Correct 8 ms 1364 KB Output is correct
30 Correct 9 ms 1364 KB Output is correct
31 Correct 9 ms 1364 KB Output is correct
32 Correct 9 ms 1364 KB Output is correct
33 Correct 2 ms 1236 KB Output is correct
34 Correct 12 ms 1364 KB Output is correct
35 Correct 10 ms 1364 KB Output is correct
36 Correct 13 ms 1372 KB Output is correct
37 Correct 11 ms 1376 KB Output is correct
38 Correct 12 ms 1432 KB Output is correct
39 Correct 11 ms 1364 KB Output is correct
40 Correct 11 ms 1364 KB Output is correct
41 Correct 7 ms 1236 KB Output is correct
42 Correct 9 ms 1296 KB Output is correct
43 Correct 10 ms 1392 KB Output is correct
44 Correct 10 ms 1368 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 3 ms 340 KB Output is correct
47 Correct 3 ms 340 KB Output is correct
48 Correct 3 ms 340 KB Output is correct
49 Correct 3 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 3 ms 340 KB Output is correct
53 Correct 2 ms 340 KB Output is correct
54 Correct 4 ms 340 KB Output is correct
55 Correct 4 ms 364 KB Output is correct
56 Correct 4 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 2 ms 340 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 3 ms 340 KB Output is correct
61 Correct 4 ms 340 KB Output is correct
62 Correct 2 ms 340 KB Output is correct
63 Correct 3 ms 340 KB Output is correct
64 Correct 3 ms 340 KB Output is correct
65 Correct 134 ms 468 KB Output is correct
66 Correct 219 ms 468 KB Output is correct
67 Correct 217 ms 468 KB Output is correct
68 Correct 176 ms 468 KB Output is correct
69 Correct 220 ms 468 KB Output is correct
70 Correct 80 ms 468 KB Output is correct
71 Correct 229 ms 460 KB Output is correct
72 Correct 220 ms 468 KB Output is correct
73 Correct 206 ms 468 KB Output is correct
74 Correct 229 ms 468 KB Output is correct
75 Correct 234 ms 468 KB Output is correct
76 Correct 212 ms 468 KB Output is correct
77 Correct 213 ms 468 KB Output is correct
78 Correct 227 ms 468 KB Output is correct
79 Correct 233 ms 468 KB Output is correct
80 Correct 228 ms 464 KB Output is correct
81 Incorrect 660 ms 892 KB Output isn't correct
82 Halted 0 ms 0 KB -