oj.uz

답안 #804937

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
804937 2023-08-03T12:00:17 Z 79brue Cultivation (JOI17_cultivation) C++17
100 / 100
 1780 ms 3660 KB 
#include <bits/stdc++.h>

using namespace std;

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

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

struct Interval{
    ll l, r; /// 높이 구간
    ll ldist, rdist, mdist; /// 최소 길이
    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;
    }
};

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

vector<Interval> info;

ll udlength[500002], udsize;
ll A[302][302], B[302][302], C[302][302];
pair<ll, ll> arr[302];

pair<ll, ll> ableGroup(ll ud, int s, int e){
    ll L = max(X[e] - ud, s==1 ? -INF : X[s-1] + 1);
    ll R = min(X[s], e==k ? INF : X[e+1] - ud - 1);
    if(L>R) return make_pair(-INF, -INF);
    return make_pair(L, R);
}

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

    for(int i=1; i<=k; i++){
        vector<ll> vec (1, Y[i]);
        A[i][i] = Y[i] - 1;
        B[i][i] = m - Y[i];
        C[i][i] = 0;
        for(int j=i+1; j<=k; j++){
            auto it = lower_bound(vec.begin(), vec.end(), Y[j]);
            if(!(it != vec.end() && *it == Y[j])) vec.insert(it, Y[j]);
            A[i][j] = vec.front() - 1;
            B[i][j] = m - vec.back();
            C[i][j] = 0;
            for(int k=0; k<(int)vec.size()-1; k++) C[i][j] = max(C[i][j], vec[k+1] - vec[k] - 1);
        }
    }

    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;

    vector<int> xls, xrs;
    for(int i=1; i<=k; i++){
        int j = i;
        while(j<k && X[i] == X[j+1]) j++;
        xls.push_back(i), xrs.push_back(j);
        i=j;
    }

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

        bool bad = 0;
        for(int i=1; i<k; i++){
            if(X[i+1] - X[i] - 1 > ud) {bad = 1; break;}
        }
        if(bad) continue;

        info.clear();
        int e = 0;
        for(int s=0; s<(int)xls.size(); s++){
            while(ableGroup(ud, xls[s], xrs[e]) == make_pair(-INF, -INF)){
                e++;
            }
            while(1){
                pair<ll, ll> p = ableGroup(ud, xls[s], xrs[e]);
                info.push_back(Interval(p.first, p.second, A[xls[s]][xrs[e]], B[xls[s]][xrs[e]], C[xls[s]][xrs[e]]));

                if(e+1<(int)xls.size() && ableGroup(ud, xls[s], xrs[e+1]) != make_pair(-INF, -INF)) e++;
                else break;
            }
            while(e<=s){
                e++;
            }
        }

        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<(int)info.size(); 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 < (int)info.size() && 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 == (int)info.size()) 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:40:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |     scanf("%lld %lld %d", &n, &m, &k);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
cultivation.cpp:43:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |         scanf("%lld %lld", &arr[i].first, &arr[i].second);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 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 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 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 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 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 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 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 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 468 KB Output is correct
18 Correct 1 ms 852 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 0 ms 468 KB Output is correct
21 Correct 1 ms 724 KB Output is correct
22 Correct 2 ms 1460 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 3 ms 2132 KB Output is correct
25 Correct 2 ms 1620 KB Output is correct
26 Correct 6 ms 3412 KB Output is correct
27 Correct 6 ms 3512 KB Output is correct
28 Correct 3 ms 2132 KB Output is correct
29 Correct 6 ms 3540 KB Output is correct
30 Correct 6 ms 3540 KB Output is correct
31 Correct 6 ms 3512 KB Output is correct
32 Correct 6 ms 3540 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 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 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 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 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 468 KB Output is correct
18 Correct 1 ms 852 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 0 ms 468 KB Output is correct
21 Correct 1 ms 724 KB Output is correct
22 Correct 2 ms 1460 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 3 ms 2132 KB Output is correct
25 Correct 2 ms 1620 KB Output is correct
26 Correct 6 ms 3412 KB Output is correct
27 Correct 6 ms 3512 KB Output is correct
28 Correct 3 ms 2132 KB Output is correct
29 Correct 6 ms 3540 KB Output is correct
30 Correct 6 ms 3540 KB Output is correct
31 Correct 6 ms 3512 KB Output is correct
32 Correct 6 ms 3540 KB Output is correct
33 Correct 9 ms 3316 KB Output is correct
34 Correct 9 ms 3412 KB Output is correct
35 Correct 12 ms 3500 KB Output is correct
36 Correct 10 ms 3536 KB Output is correct
37 Correct 10 ms 3412 KB Output is correct
38 Correct 10 ms 3524 KB Output is correct
39 Correct 10 ms 3412 KB Output is correct
40 Correct 10 ms 3504 KB Output is correct
41 Correct 8 ms 3284 KB Output is correct
42 Correct 9 ms 3468 KB Output is correct
43 Correct 10 ms 3412 KB Output is correct
44 Correct 10 ms 3540 KB Output is correct

Subtask #4
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 2 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 0 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 2 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 468 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 2 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 0 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 2 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 2 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 37 ms 1108 KB Output is correct
22 Correct 64 ms 1108 KB Output is correct
23 Correct 76 ms 1164 KB Output is correct
24 Correct 44 ms 1108 KB Output is correct
25 Correct 67 ms 1108 KB Output is correct
26 Correct 21 ms 1108 KB Output is correct
27 Correct 65 ms 1164 KB Output is correct
28 Correct 63 ms 1172 KB Output is correct
29 Correct 55 ms 1172 KB Output is correct
30 Correct 67 ms 1164 KB Output is correct
31 Correct 76 ms 1176 KB Output is correct
32 Correct 66 ms 1108 KB Output is correct
33 Correct 59 ms 1172 KB Output is correct
34 Correct 62 ms 1164 KB Output is correct
35 Correct 72 ms 1168 KB Output is correct
36 Correct 70 ms 1164 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 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 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 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 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 468 KB Output is correct
18 Correct 1 ms 852 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 0 ms 468 KB Output is correct
21 Correct 1 ms 724 KB Output is correct
22 Correct 2 ms 1460 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 3 ms 2132 KB Output is correct
25 Correct 2 ms 1620 KB Output is correct
26 Correct 6 ms 3412 KB Output is correct
27 Correct 6 ms 3512 KB Output is correct
28 Correct 3 ms 2132 KB Output is correct
29 Correct 6 ms 3540 KB Output is correct
30 Correct 6 ms 3540 KB Output is correct
31 Correct 6 ms 3512 KB Output is correct
32 Correct 6 ms 3540 KB Output is correct
33 Correct 9 ms 3316 KB Output is correct
34 Correct 9 ms 3412 KB Output is correct
35 Correct 12 ms 3500 KB Output is correct
36 Correct 10 ms 3536 KB Output is correct
37 Correct 10 ms 3412 KB Output is correct
38 Correct 10 ms 3524 KB Output is correct
39 Correct 10 ms 3412 KB Output is correct
40 Correct 10 ms 3504 KB Output is correct
41 Correct 8 ms 3284 KB Output is correct
42 Correct 9 ms 3468 KB Output is correct
43 Correct 10 ms 3412 KB Output is correct
44 Correct 10 ms 3540 KB Output is correct
45 Correct 1 ms 468 KB Output is correct
46 Correct 1 ms 468 KB Output is correct
47 Correct 1 ms 468 KB Output is correct
48 Correct 1 ms 468 KB Output is correct
49 Correct 2 ms 468 KB Output is correct
50 Correct 1 ms 468 KB Output is correct
51 Correct 0 ms 468 KB Output is correct
52 Correct 1 ms 468 KB Output is correct
53 Correct 1 ms 468 KB Output is correct
54 Correct 2 ms 468 KB Output is correct
55 Correct 1 ms 468 KB Output is correct
56 Correct 2 ms 468 KB Output is correct
57 Correct 1 ms 468 KB Output is correct
58 Correct 1 ms 468 KB Output is correct
59 Correct 1 ms 468 KB Output is correct
60 Correct 2 ms 468 KB Output is correct
61 Correct 1 ms 468 KB Output is correct
62 Correct 1 ms 468 KB Output is correct
63 Correct 1 ms 468 KB Output is correct
64 Correct 1 ms 468 KB Output is correct
65 Correct 37 ms 1108 KB Output is correct
66 Correct 64 ms 1108 KB Output is correct
67 Correct 76 ms 1164 KB Output is correct
68 Correct 44 ms 1108 KB Output is correct
69 Correct 67 ms 1108 KB Output is correct
70 Correct 21 ms 1108 KB Output is correct
71 Correct 65 ms 1164 KB Output is correct
72 Correct 63 ms 1172 KB Output is correct
73 Correct 55 ms 1172 KB Output is correct
74 Correct 67 ms 1164 KB Output is correct
75 Correct 76 ms 1176 KB Output is correct
76 Correct 66 ms 1108 KB Output is correct
77 Correct 59 ms 1172 KB Output is correct
78 Correct 62 ms 1164 KB Output is correct
79 Correct 72 ms 1168 KB Output is correct
80 Correct 70 ms 1164 KB Output is correct
81 Correct 687 ms 2496 KB Output is correct
82 Correct 672 ms 2516 KB Output is correct
83 Correct 785 ms 2872 KB Output is correct
84 Correct 976 ms 2880 KB Output is correct
85 Correct 1757 ms 3588 KB Output is correct
86 Correct 1770 ms 3588 KB Output is correct
87 Correct 1071 ms 3576 KB Output is correct
88 Correct 1387 ms 3592 KB Output is correct
89 Correct 1721 ms 3588 KB Output is correct
90 Correct 1192 ms 3172 KB Output is correct
91 Correct 1707 ms 3660 KB Output is correct
92 Correct 1726 ms 3588 KB Output is correct
93 Correct 1284 ms 3584 KB Output is correct
94 Correct 1751 ms 3592 KB Output is correct
95 Correct 1722 ms 3588 KB Output is correct
96 Correct 1584 ms 3592 KB Output is correct
97 Correct 1780 ms 3596 KB Output is correct
98 Correct 10 ms 3396 KB Output is correct