oj.uz

답안 #589076

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
589076 2022-07-04T09:11:37 Z 반딧불(#8402) Sightseeing in Kyoto (JOI22_kyoto) C++17
40 / 100
 58 ms 7820 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);
    assert(max(n, m) <= 10000);
    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%2;
        for(int j=1; j<=m; j++) dist[!bit][j] = 1e18;
        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] = min(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 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 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 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 1 ms 340 KB Output is correct
11 Correct 1 ms 320 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 6 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 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 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 0 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 308 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 340 KB Output is correct
28 Correct 1 ms 340 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 340 KB Output is correct
3 Correct 1 ms 312 KB Output is correct
4 Correct 20 ms 3400 KB Output is correct
5 Correct 16 ms 3272 KB Output is correct
6 Correct 7 ms 1740 KB Output is correct
7 Correct 43 ms 6264 KB Output is correct
8 Correct 43 ms 6236 KB Output is correct
9 Correct 43 ms 6164 KB Output is correct
10 Correct 44 ms 6280 KB Output is correct
11 Correct 35 ms 6092 KB Output is correct
12 Correct 44 ms 6192 KB Output is correct
13 Correct 48 ms 6228 KB Output is correct
14 Correct 30 ms 6252 KB Output is correct
15 Correct 35 ms 6164 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 304 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 308 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct

Subtask #3
0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 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 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 1 ms 340 KB Output is correct
11 Correct 1 ms 320 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 6 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 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 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 0 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 308 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 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 312 KB Output is correct
32 Correct 20 ms 3400 KB Output is correct
33 Correct 16 ms 3272 KB Output is correct
34 Correct 7 ms 1740 KB Output is correct
35 Correct 43 ms 6264 KB Output is correct
36 Correct 43 ms 6236 KB Output is correct
37 Correct 43 ms 6164 KB Output is correct
38 Correct 44 ms 6280 KB Output is correct
39 Correct 35 ms 6092 KB Output is correct
40 Correct 44 ms 6192 KB Output is correct
41 Correct 48 ms 6228 KB Output is correct
42 Correct 30 ms 6252 KB Output is correct
43 Correct 35 ms 6164 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 0 ms 340 KB Output is correct
47 Correct 0 ms 304 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 0 ms 308 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 0 ms 340 KB Output is correct
52 Correct 0 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 25 ms 3956 KB Output is correct
56 Correct 1 ms 324 KB Output is correct
57 Correct 3 ms 852 KB Output is correct
58 Correct 9 ms 1444 KB Output is correct
59 Correct 53 ms 6296 KB Output is correct
60 Correct 51 ms 6400 KB Output is correct
61 Correct 58 ms 6420 KB Output is correct
62 Correct 56 ms 6500 KB Output is correct
63 Runtime error 56 ms 7820 KB Execution killed with signal 6
64 Halted 0 ms 0 KB -