oj.uz

Submission #874181

# Submission time Handle Problem Language Result Execution time Memory
874181 2023-11-16T12:04:43 Z garam1732 None (JOI16_ho_t4) C++14
38 / 100
 1000 ms 6848 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;

vector<pi> arr[MAXN], u, s;
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 = {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.push_back(v);
    }

    if(v == pll(0, 0) || k == 1) {
        int cnt = 0;
        sort(all(s)); comp(s);
        for(auto x : s) {
            if(lower_bound(all(s), pi(x.ff+1,x.ss)) != upper_bound(all(s), pi(x.ff+1,x.ss))
               && lower_bound(all(s), pi(x.ff,x.ss+1)) != upper_bound(all(s), pi(x.ff,x.ss+1))
               && lower_bound(all(s), pi(x.ff+1,x.ss+1)) != upper_bound(all(s), pi(x.ff+1,x.ss+1)) )
                cnt++;
        }

        cout << cnt;
        return 0;
    }

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

    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; int a = 0, b = 0, c = 0, d = 0;
        for(int y : ww) {
            while(a+1 < arr[i].size() && arr[i][a+1].ff <= y) a++;
            while(b+1 < arr[it1].size() && arr[it1][b+1].ff <= y) b++;
            while(c+1 < arr[it2].size() && arr[it2][c+1].ff <= y+1) c++;
            while(d+1 < arr[it3].size() && arr[it3][d+1].ff <= y+1) d++;

            if(arr[i][a].ff > y || arr[it1][b].ff > y || arr[it2][c].ff > y+1 || arr[it3][d].ff > y+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++) {
      |                    ~~^~~~~~~~~~
2016_ho_t4.cpp:112:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |             while(a+1 < arr[i].size() && arr[i][a+1].ff <= y) a++;
      |                   ~~~~^~~~~~~~~~~~~~~
2016_ho_t4.cpp:113:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  113 |             while(b+1 < arr[it1].size() && arr[it1][b+1].ff <= y) b++;
      |                   ~~~~^~~~~~~~~~~~~~~~~
2016_ho_t4.cpp:114:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  114 |             while(c+1 < arr[it2].size() && arr[it2][c+1].ff <= y+1) c++;
      |                   ~~~~^~~~~~~~~~~~~~~~~
2016_ho_t4.cpp:115:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  115 |             while(d+1 < arr[it3].size() && arr[it3][d+1].ff <= y+1) d++;
      |                   ~~~~^~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2720 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2648 KB Output is correct
6 Correct 1 ms 2648 KB Output is correct
7 Correct 0 ms 2804 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 2652 KB Output is correct
11 Correct 1 ms 2648 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 2648 KB Output is correct
16 Correct 1 ms 2648 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 2652 KB Output is correct
21 Correct 1 ms 2652 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 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2720 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2648 KB Output is correct
6 Correct 1 ms 2648 KB Output is correct
7 Correct 0 ms 2804 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 2652 KB Output is correct
11 Correct 1 ms 2648 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 2648 KB Output is correct
16 Correct 1 ms 2648 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 2652 KB Output is correct
21 Correct 1 ms 2652 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 2 ms 2908 KB Output is correct
28 Correct 3 ms 2908 KB Output is correct
29 Correct 8 ms 3288 KB Output is correct
30 Correct 11 ms 4120 KB Output is correct
31 Correct 20 ms 4120 KB Output is correct
32 Correct 15 ms 4120 KB Output is correct
33 Correct 15 ms 4120 KB Output is correct
34 Correct 15 ms 4120 KB Output is correct
35 Correct 15 ms 4120 KB Output is correct
36 Correct 15 ms 4120 KB Output is correct
37 Correct 14 ms 4120 KB Output is correct
38 Correct 14 ms 4120 KB Output is correct
39 Correct 15 ms 4120 KB Output is correct
40 Correct 14 ms 4116 KB Output is correct
41 Correct 13 ms 4120 KB Output is correct
42 Correct 12 ms 4120 KB Output is correct
43 Correct 15 ms 4120 KB Output is correct
44 Correct 14 ms 4320 KB Output is correct
45 Correct 12 ms 4120 KB Output is correct
46 Correct 16 ms 4120 KB Output is correct
47 Correct 20 ms 4120 KB Output is correct
48 Correct 31 ms 4120 KB Output is correct
49 Correct 7 ms 4120 KB Output is correct
50 Correct 8 ms 4120 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2720 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2648 KB Output is correct
6 Correct 1 ms 2648 KB Output is correct
7 Correct 0 ms 2804 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 2652 KB Output is correct
11 Correct 1 ms 2648 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 2648 KB Output is correct
16 Correct 1 ms 2648 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 2652 KB Output is correct
21 Correct 1 ms 2652 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 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 2648 KB Output is correct
31 Correct 1 ms 2648 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 2652 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 2648 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 2652 KB Output is correct
45 Correct 1 ms 2652 KB Output is correct
46 Correct 1 ms 2652 KB Output is correct
47 Correct 1 ms 2652 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 2648 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2720 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2648 KB Output is correct
6 Correct 1 ms 2648 KB Output is correct
7 Correct 0 ms 2804 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 2652 KB Output is correct
11 Correct 1 ms 2648 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 2648 KB Output is correct
16 Correct 1 ms 2648 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 2652 KB Output is correct
21 Correct 1 ms 2652 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 2 ms 2908 KB Output is correct
28 Correct 3 ms 2908 KB Output is correct
29 Correct 8 ms 3288 KB Output is correct
30 Correct 11 ms 4120 KB Output is correct
31 Correct 20 ms 4120 KB Output is correct
32 Correct 15 ms 4120 KB Output is correct
33 Correct 15 ms 4120 KB Output is correct
34 Correct 15 ms 4120 KB Output is correct
35 Correct 15 ms 4120 KB Output is correct
36 Correct 15 ms 4120 KB Output is correct
37 Correct 14 ms 4120 KB Output is correct
38 Correct 14 ms 4120 KB Output is correct
39 Correct 15 ms 4120 KB Output is correct
40 Correct 14 ms 4116 KB Output is correct
41 Correct 13 ms 4120 KB Output is correct
42 Correct 12 ms 4120 KB Output is correct
43 Correct 15 ms 4120 KB Output is correct
44 Correct 14 ms 4320 KB Output is correct
45 Correct 12 ms 4120 KB Output is correct
46 Correct 16 ms 4120 KB Output is correct
47 Correct 20 ms 4120 KB Output is correct
48 Correct 31 ms 4120 KB Output is correct
49 Correct 7 ms 4120 KB Output is correct
50 Correct 8 ms 4120 KB Output is correct
51 Correct 1 ms 2652 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 2648 KB Output is correct
56 Correct 1 ms 2648 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 2652 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 2648 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 2652 KB Output is correct
70 Correct 1 ms 2652 KB Output is correct
71 Correct 1 ms 2652 KB Output is correct
72 Correct 1 ms 2652 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 3 ms 2908 KB Output is correct
77 Correct 2 ms 2900 KB Output is correct
78 Correct 6 ms 3684 KB Output is correct
79 Correct 16 ms 5744 KB Output is correct
80 Correct 49 ms 5584 KB Output is correct
81 Correct 15 ms 4116 KB Output is correct
82 Correct 142 ms 6652 KB Output is correct
83 Correct 27 ms 6360 KB Output is correct
84 Correct 130 ms 6656 KB Output is correct
85 Correct 79 ms 6848 KB Output is correct
86 Correct 22 ms 6604 KB Output is correct
87 Correct 192 ms 6592 KB Output is correct
88 Correct 78 ms 6432 KB Output is correct
89 Correct 72 ms 6604 KB Output is correct
90 Correct 15 ms 4120 KB Output is correct
91 Correct 135 ms 6620 KB Output is correct
92 Correct 120 ms 6608 KB Output is correct
93 Correct 61 ms 6612 KB Output is correct
94 Correct 53 ms 6352 KB Output is correct
95 Correct 73 ms 6608 KB Output is correct
96 Execution timed out 1010 ms 6348 KB Time limit exceeded
97 Halted 0 ms 0 KB -