oj.uz

Submission #874174

# Submission time Handle Problem Language Result Execution time Memory
874174 2023-11-16T11:53:00 Z garam1732 None (JOI16_ho_t4) C++14
38 / 100
 1000 ms 12368 KB 
#include <bits/stdc++.h>
using namespace std;

#define ff first
#define ss second
#define bl " "
#define endl "\n"
#define all(v) v.begin(), v.end()
#define comp(v) v.erase(unique(all(v)), v.end())
typedef long long ll;
typedef pair<int, int> pi;
typedef pair<pi, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 100100;
const int MOD = 1e9+7;

set<pi> s, ps;
vector<pi> arr[MAXN], u;
vector<pll> w;
vector<int> ww;

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);

    int n, k; cin >> n >> k;
    string str; cin >> str;

    pll v = pll(0, 0); s.insert(v);
    for(int i = 0; i < n; i++) {
        if(str[i] == 'N') v.ss++;
        else if(str[i] == 'S') v.ss--;
        else if(str[i] == 'E') v.ff++;
        else v.ff--;

        s.insert(v);
    }

    if(v == pll(0, 0) || k == 1) {
        int cnt = 0;
        for(auto x : s) {
            if(s.count(pi(x.ff+1,x.ss)) && s.count(pi(x.ff,x.ss+1)) && s.count(pi(x.ff+1, x.ss+1)))
                cnt++;
        }

        cout << cnt;
        return 0;
    }

    if(v.ff == 0) {
        for(auto x : s) ps.insert(pi(x.ss, x.ff));
        swap(v.ff, v.ss);
        swap(s, ps); ps.clear();
    }
    if(v.ff < 0) {
        for(auto x : s) ps.insert(pi(-x.ff, x.ss));
        v.ff = -v.ff;
        swap(s, ps); ps.clear();
    }

    for(auto x : s) w.push_back(pll(v.ff*x.ss-v.ss*x.ff, (x.ff%v.ff+v.ff)%v.ff));
    sort(all(w)); comp(w);

    for(auto x : s) {
        int it = lower_bound(all(w), pll(v.ff*x.ss-v.ss*x.ff, (x.ff%v.ff+v.ff)%v.ff)) - w.begin();
        arr[it].push_back(pi(x.ff, k-1));
    }
    for(int i = 0; i < w.size(); i++) {
        sort(all(arr[i]));

    //cout<<endl;
        for(auto y : arr[i]) {
           // cout<<'a'<<y.ff<<bl<<y.ss<<bl;
            if(u.size() && (y.ff-u.rbegin()->ff)/v.ff <= u.rbegin()->ss) u.rbegin()->ss = (y.ff-u.rbegin()->ff)/v.ff+k-1;
            else u.push_back(y);
        }

        swap(arr[i], u);
        u.clear();
    }
//cout<<endl;
//    for(int i = 0; i < w.size(); i++) {
//        cout<<w[i].ff<<endl;
//        for(pi x : arr[i]) cout<<x.ff<<bl<<x.ss<<bl;
//        cout<<endl;
//    }

//    arr[0] = {pi(0, 2)};
//    arr[1] = {pi(1, 1), pi(2, 1)};
//    arr[2] = {pi(1, 2), pi(2, 1)};
//    arr[3] = {pi(2, 2), pi(3, 1)};
//    arr[4] = {pi(4, 1)};

    ll cnt = 0;
    for(int i = 0; i < w.size(); i++) {
        int it1 = lower_bound(all(w), pll(w[i].ff+v.ff, w[i].ss))-w.begin();
        if(w[it1] != pll(w[i].ff+v.ff, w[i].ss)) continue;
        int it2 = lower_bound(all(w), pll(w[i].ff-v.ss, (w[i].ss+1)%v.ff))-w.begin();
        if(w[it2] != pll(w[i].ff-v.ss, (w[i].ss+1)%v.ff)) continue;
        int it3 = lower_bound(all(w), pll(w[i].ff+v.ff-v.ss, (w[i].ss+1)%v.ff))-w.begin();
        if(w[it3] != pll(w[i].ff+v.ff-v.ss, (w[i].ss+1)%v.ff)) continue;

        for(auto y : arr[i]) ww.push_back(y.ff);
        for(auto y : arr[it1]) ww.push_back(y.ff);
        for(auto y : arr[it2]) ww.push_back(y.ff);
        for(auto y : arr[it3]) ww.push_back(y.ff);

        sort(all(ww)); comp(ww);

        ll p = -MOD;
        for(int y : ww) {
            int a = lower_bound(all(arr[i]), pi(y+1, 0)) - arr[i].begin() - 1;
            int b = lower_bound(all(arr[it1]), pi(y+1, 0)) - arr[it1].begin() - 1;
            int c = lower_bound(all(arr[it2]), pi(y+2, 0)) - arr[it2].begin() - 1;
            int d = lower_bound(all(arr[it3]), pi(y+2, 0)) - arr[it3].begin() - 1;

            if(a == -1 || b == -1 || c == -1 || d == -1) continue;

            ll l = max(max(arr[i][a].ff, arr[it1][b].ff), max(arr[it2][c].ff, arr[it3][d].ff)-1);
            ll r = min(min(arr[i][a].ff+v.ff*arr[i][a].ss, arr[it1][b].ff+v.ff*arr[it1][b].ss), min(arr[it2][c].ff+v.ff*arr[it2][c].ss, arr[it3][d].ff+v.ff*arr[it3][d].ss)-1);

            //if(w[i] == -1) cout << l<<bl<<r<<endl;

            if(p >= l) l = p + v.ff;
            if(l > r) continue;

            cnt += (r-l)/v.ff+1;
            p = r;
        }

        //cout << w[i].ff<<bl<<cnt<<endl;
    }

    cout << cnt;
}

Compilation message

2016_ho_t4.cpp: In function 'int main()':
2016_ho_t4.cpp:68:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |     for(int i = 0; i < w.size(); i++) {
      |                    ~~^~~~~~~~~~
2016_ho_t4.cpp:95:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |     for(int i = 0; i < w.size(); i++) {
      |                    ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 1 ms 2904 KB Output is correct
8 Correct 1 ms 2652 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2648 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 1 ms 2652 KB Output is correct
20 Correct 1 ms 2648 KB Output is correct
21 Correct 1 ms 2648 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 1 ms 2652 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 1 ms 2904 KB Output is correct
8 Correct 1 ms 2652 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2648 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 1 ms 2652 KB Output is correct
20 Correct 1 ms 2648 KB Output is correct
21 Correct 1 ms 2648 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 1 ms 2652 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 2 ms 2652 KB Output is correct
28 Correct 3 ms 2908 KB Output is correct
29 Correct 7 ms 3492 KB Output is correct
30 Correct 9 ms 3420 KB Output is correct
31 Correct 20 ms 6736 KB Output is correct
32 Correct 14 ms 3672 KB Output is correct
33 Correct 15 ms 3932 KB Output is correct
34 Correct 13 ms 4188 KB Output is correct
35 Correct 13 ms 3932 KB Output is correct
36 Correct 12 ms 3676 KB Output is correct
37 Correct 13 ms 4008 KB Output is correct
38 Correct 13 ms 3932 KB Output is correct
39 Correct 13 ms 4084 KB Output is correct
40 Correct 12 ms 3676 KB Output is correct
41 Correct 12 ms 3676 KB Output is correct
42 Correct 11 ms 3544 KB Output is correct
43 Correct 14 ms 3932 KB Output is correct
44 Correct 13 ms 3932 KB Output is correct
45 Correct 11 ms 3676 KB Output is correct
46 Correct 15 ms 5208 KB Output is correct
47 Correct 17 ms 5212 KB Output is correct
48 Correct 26 ms 7516 KB Output is correct
49 Correct 17 ms 7516 KB Output is correct
50 Correct 22 ms 7516 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 1 ms 2904 KB Output is correct
8 Correct 1 ms 2652 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2648 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 1 ms 2652 KB Output is correct
20 Correct 1 ms 2648 KB Output is correct
21 Correct 1 ms 2648 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 1 ms 2652 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2648 KB Output is correct
27 Correct 1 ms 2652 KB Output is correct
28 Correct 1 ms 2652 KB Output is correct
29 Correct 1 ms 2652 KB Output is correct
30 Correct 1 ms 2652 KB Output is correct
31 Correct 1 ms 2652 KB Output is correct
32 Correct 1 ms 2652 KB Output is correct
33 Correct 1 ms 2652 KB Output is correct
34 Correct 1 ms 2812 KB Output is correct
35 Correct 1 ms 2652 KB Output is correct
36 Correct 1 ms 2652 KB Output is correct
37 Correct 1 ms 2652 KB Output is correct
38 Correct 1 ms 2652 KB Output is correct
39 Correct 1 ms 2652 KB Output is correct
40 Correct 1 ms 2652 KB Output is correct
41 Correct 1 ms 2652 KB Output is correct
42 Correct 1 ms 2652 KB Output is correct
43 Correct 1 ms 2652 KB Output is correct
44 Correct 1 ms 2648 KB Output is correct
45 Correct 1 ms 2820 KB Output is correct
46 Correct 1 ms 2652 KB Output is correct
47 Correct 1 ms 2808 KB Output is correct
48 Correct 1 ms 2652 KB Output is correct
49 Correct 1 ms 2652 KB Output is correct
50 Correct 1 ms 2652 KB Output is correct

Subtask #4
0 / 62.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 1 ms 2904 KB Output is correct
8 Correct 1 ms 2652 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2648 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 1 ms 2652 KB Output is correct
20 Correct 1 ms 2648 KB Output is correct
21 Correct 1 ms 2648 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 1 ms 2652 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 2 ms 2652 KB Output is correct
28 Correct 3 ms 2908 KB Output is correct
29 Correct 7 ms 3492 KB Output is correct
30 Correct 9 ms 3420 KB Output is correct
31 Correct 20 ms 6736 KB Output is correct
32 Correct 14 ms 3672 KB Output is correct
33 Correct 15 ms 3932 KB Output is correct
34 Correct 13 ms 4188 KB Output is correct
35 Correct 13 ms 3932 KB Output is correct
36 Correct 12 ms 3676 KB Output is correct
37 Correct 13 ms 4008 KB Output is correct
38 Correct 13 ms 3932 KB Output is correct
39 Correct 13 ms 4084 KB Output is correct
40 Correct 12 ms 3676 KB Output is correct
41 Correct 12 ms 3676 KB Output is correct
42 Correct 11 ms 3544 KB Output is correct
43 Correct 14 ms 3932 KB Output is correct
44 Correct 13 ms 3932 KB Output is correct
45 Correct 11 ms 3676 KB Output is correct
46 Correct 15 ms 5208 KB Output is correct
47 Correct 17 ms 5212 KB Output is correct
48 Correct 26 ms 7516 KB Output is correct
49 Correct 17 ms 7516 KB Output is correct
50 Correct 22 ms 7516 KB Output is correct
51 Correct 1 ms 2648 KB Output is correct
52 Correct 1 ms 2652 KB Output is correct
53 Correct 1 ms 2652 KB Output is correct
54 Correct 1 ms 2652 KB Output is correct
55 Correct 1 ms 2652 KB Output is correct
56 Correct 1 ms 2652 KB Output is correct
57 Correct 1 ms 2652 KB Output is correct
58 Correct 1 ms 2652 KB Output is correct
59 Correct 1 ms 2812 KB Output is correct
60 Correct 1 ms 2652 KB Output is correct
61 Correct 1 ms 2652 KB Output is correct
62 Correct 1 ms 2652 KB Output is correct
63 Correct 1 ms 2652 KB Output is correct
64 Correct 1 ms 2652 KB Output is correct
65 Correct 1 ms 2652 KB Output is correct
66 Correct 1 ms 2652 KB Output is correct
67 Correct 1 ms 2652 KB Output is correct
68 Correct 1 ms 2652 KB Output is correct
69 Correct 1 ms 2648 KB Output is correct
70 Correct 1 ms 2820 KB Output is correct
71 Correct 1 ms 2652 KB Output is correct
72 Correct 1 ms 2808 KB Output is correct
73 Correct 1 ms 2652 KB Output is correct
74 Correct 1 ms 2652 KB Output is correct
75 Correct 1 ms 2652 KB Output is correct
76 Correct 2 ms 2908 KB Output is correct
77 Correct 2 ms 2908 KB Output is correct
78 Correct 12 ms 4956 KB Output is correct
79 Correct 22 ms 7352 KB Output is correct
80 Correct 58 ms 4312 KB Output is correct
81 Correct 13 ms 4440 KB Output is correct
82 Correct 200 ms 4820 KB Output is correct
83 Correct 25 ms 4444 KB Output is correct
84 Correct 163 ms 5080 KB Output is correct
85 Correct 100 ms 5212 KB Output is correct
86 Correct 44 ms 12368 KB Output is correct
87 Correct 251 ms 5468 KB Output is correct
88 Correct 111 ms 5212 KB Output is correct
89 Correct 84 ms 5276 KB Output is correct
90 Correct 13 ms 3928 KB Output is correct
91 Correct 165 ms 5468 KB Output is correct
92 Correct 142 ms 5720 KB Output is correct
93 Correct 74 ms 5320 KB Output is correct
94 Correct 67 ms 4700 KB Output is correct
95 Correct 83 ms 4572 KB Output is correct
96 Execution timed out 1101 ms 7104 KB Time limit exceeded
97 Halted 0 ms 0 KB -