oj.uz

Submission #589089

# Submission time Handle Problem Language Result Execution time Memory
589089 2022-07-04T09:15:40 Z 반딧불(#8402) Sightseeing in Kyoto (JOI22_kyoto) C++17
40 / 100
 2000 ms 6940 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")

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=1; i<=n; i++) al[i] = al[i+1] - al[i];
    for(int i=1; i<=m; i++) bl[i] = bl[i+1] - bl[i];
    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]);
            dist[!bit][j] = dist[bit][j] + b[j] * al[i];
        }
    }
    printf("%lld", dist[n%2][m]);
}

Compilation message

kyoto.cpp: In function 'int main()':
kyoto.cpp:71:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   71 |     scanf("%d %d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~
kyoto.cpp:72:34: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |     for(int i=1; i<=n; i++) scanf("%lld", &ta[i]);
      |                             ~~~~~^~~~~~~~~~~~~~~~
kyoto.cpp:73:34: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |     for(int i=1; i<=m; i++) scanf("%lld", &tb[i]);
      |                             ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
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 1 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 0 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 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 4 ms 448 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 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 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 0 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct

Subtask #2
30.0 / 30.0

# 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 1 ms 340 KB Output is correct
4 Correct 22 ms 3144 KB Output is correct
5 Correct 17 ms 3088 KB Output is correct
6 Correct 11 ms 1740 KB Output is correct
7 Correct 58 ms 5424 KB Output is correct
8 Correct 64 ms 5392 KB Output is correct
9 Correct 63 ms 5616 KB Output is correct
10 Correct 54 ms 5488 KB Output is correct
11 Correct 44 ms 5448 KB Output is correct
12 Correct 56 ms 5452 KB Output is correct
13 Correct 55 ms 5452 KB Output is correct
14 Correct 39 ms 5460 KB Output is correct
15 Correct 40 ms 5504 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 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 0 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct

Subtask #3
0 / 60.0

# 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 1 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 0 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 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 4 ms 448 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 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 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 0 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 22 ms 3144 KB Output is correct
33 Correct 17 ms 3088 KB Output is correct
34 Correct 11 ms 1740 KB Output is correct
35 Correct 58 ms 5424 KB Output is correct
36 Correct 64 ms 5392 KB Output is correct
37 Correct 63 ms 5616 KB Output is correct
38 Correct 54 ms 5488 KB Output is correct
39 Correct 44 ms 5448 KB Output is correct
40 Correct 56 ms 5452 KB Output is correct
41 Correct 55 ms 5452 KB Output is correct
42 Correct 39 ms 5460 KB Output is correct
43 Correct 40 ms 5504 KB Output is correct
44 Correct 0 ms 340 KB Output is correct
45 Correct 0 ms 340 KB Output is correct
46 Correct 0 ms 340 KB Output is correct
47 Correct 0 ms 340 KB Output is correct
48 Correct 0 ms 340 KB Output is correct
49 Correct 1 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 1 ms 340 KB Output is correct
53 Correct 0 ms 340 KB Output is correct
54 Correct 0 ms 340 KB Output is correct
55 Correct 30 ms 3144 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 3 ms 724 KB Output is correct
58 Correct 9 ms 1164 KB Output is correct
59 Correct 64 ms 5464 KB Output is correct
60 Correct 66 ms 5476 KB Output is correct
61 Correct 57 ms 5464 KB Output is correct
62 Correct 58 ms 5408 KB Output is correct
63 Execution timed out 2060 ms 6940 KB Time limit exceeded
64 Halted 0 ms 0 KB -