oj.uz

답안 #589083

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
589083 2022-07-04T09:13:48 Z 반딧불(#8402) Sightseeing in Kyoto (JOI22_kyoto) C++17
40 / 100
 2000 ms 6916 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

struct vector2{
    ll x, y;
    vector2(){}
    vector2(ll x, ll y): x(x), y(y){}

    vector2 operator-(const vector2 &r)const{
        return vector2(x-r.x, y-r.y);
    }

    ll cross(vector2 r)const{
        return x*r.y - y*r.x;
    }

    bool operator<(const vector2 &r)const{
        return x<r.x;
    }
};

ll ccw(vector2 a, vector2 b){
    return a.cross(b);
}

ll ccw(vector2 a, vector2 b, vector2 c){
    return ccw(b-a, c-a);
}

vector<vector2> hull(vector<vector2> &v){
    int sz = (int)v.size();
    sort(v.begin(), v.end());
    sort(v.begin()+1, v.end(), [&](vector2 A, vector2 B){
        if(ccw(v[0], A, B) == 0) return A.x < B.x;
        return ccw(v[0], A, B) > 0;
    });
    vector<vector2> ret (1, v[0]);
    for(int i=1; i<(int)v.size(); i++){
        while(ret.size() >= 2 && ccw(ret[ret.size()-2], ret.back(), v[i]) <= 0) ret.pop_back();
        ret.push_back(v[i]);
        if(v[i].x == sz) break;
    }
    return ret;
}

void simplify(ll* arr, ll* narr, int &sz, ll* loc){
    vector<vector2> vec;
    for(int i=1; i<=sz; i++) vec.push_back(vector2(i, arr[i]));
    vec = hull(vec);
    assert((int)vec.back().x == sz);
    sz = (int)vec.size();
    for(int i=1; i<=sz; i++){
        narr[i] = vec[i-1].y;
        loc[i] = vec[i-1].x;
    }
}

int n, m;
ll ta[100002], tb[100002];
ll a[100002], b[100002];
ll al[100002], bl[100002];
ll dist[2][50002];

int main(){
    scanf("%d %d", &n, &m);
    for(int i=1; i<=n; i++) scanf("%lld", &ta[i]);
    for(int i=1; i<=m; i++) scanf("%lld", &tb[i]);
    simplify(ta, a, n, al);
    simplify(tb, b, m, bl);
    for(int i=0; i<2; i++) for(int j=1; j<=m; j++) dist[i][j] = 1e18;
    dist[1][1] = 0;
    for(int i=1; i<=n; i++){
        int bit = (i&1);
        for(int j=1; j<=m; j++){
            dist[bit][j+1] = min(dist[bit][j+1], dist[bit][j] + a[i] * (bl[j+1]-bl[j]));
            dist[!bit][j] = dist[bit][j] + b[j] * (al[i+1]-al[i]);
        }
    }
    printf("%lld", dist[n%2][m]);
}

Compilation message

kyoto.cpp: In function 'int main()':
kyoto.cpp:68:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   68 |     scanf("%d %d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~
kyoto.cpp:69:34: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   69 |     for(int i=1; i<=n; i++) scanf("%lld", &ta[i]);
      |                             ~~~~~^~~~~~~~~~~~~~~~
kyoto.cpp:70:34: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |     for(int i=1; i<=m; i++) scanf("%lld", &tb[i]);
      |                             ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 308 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 352 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 5 ms 468 KB Output is correct
14 Correct 1 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 1 ms 340 KB Output is correct
19 Correct 1 ms 304 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 1 ms 308 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 312 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 22 ms 3188 KB Output is correct
5 Correct 18 ms 3108 KB Output is correct
6 Correct 8 ms 1868 KB Output is correct
7 Correct 48 ms 5540 KB Output is correct
8 Correct 42 ms 5596 KB Output is correct
9 Correct 59 ms 5564 KB Output is correct
10 Correct 44 ms 5640 KB Output is correct
11 Correct 34 ms 5596 KB Output is correct
12 Correct 56 ms 5588 KB Output is correct
13 Correct 50 ms 5648 KB Output is correct
14 Correct 33 ms 5580 KB Output is correct
15 Correct 32 ms 5652 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 308 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 308 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 304 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 1 ms 308 KB Output is correct

Subtask #3
0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 308 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 1 ms 352 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 5 ms 468 KB Output is correct
14 Correct 1 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 1 ms 340 KB Output is correct
19 Correct 1 ms 304 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 1 ms 308 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 312 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 22 ms 3188 KB Output is correct
33 Correct 18 ms 3108 KB Output is correct
34 Correct 8 ms 1868 KB Output is correct
35 Correct 48 ms 5540 KB Output is correct
36 Correct 42 ms 5596 KB Output is correct
37 Correct 59 ms 5564 KB Output is correct
38 Correct 44 ms 5640 KB Output is correct
39 Correct 34 ms 5596 KB Output is correct
40 Correct 56 ms 5588 KB Output is correct
41 Correct 50 ms 5648 KB Output is correct
42 Correct 33 ms 5580 KB Output is correct
43 Correct 32 ms 5652 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 0 ms 340 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 0 ms 308 KB Output is correct
48 Correct 0 ms 340 KB Output is correct
49 Correct 0 ms 308 KB Output is correct
50 Correct 0 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 304 KB Output is correct
53 Correct 0 ms 340 KB Output is correct
54 Correct 1 ms 308 KB Output is correct
55 Correct 23 ms 3284 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 2 ms 784 KB Output is correct
58 Correct 8 ms 1248 KB Output is correct
59 Correct 47 ms 5464 KB Output is correct
60 Correct 57 ms 5496 KB Output is correct
61 Correct 60 ms 5464 KB Output is correct
62 Correct 49 ms 5492 KB Output is correct
63 Execution timed out 2086 ms 6916 KB Time limit exceeded
64 Halted 0 ms 0 KB -