oj.uz

Submission #874172

# Submission time Handle Problem Language Result Execution time Memory
874172 2023-11-16T11:45:44 Z garam1732 None (JOI16_ho_t4) C++14
15 / 100
 26 ms 7516 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];
vector<pll> w;
vector<int> ww;
vector<pi> u;

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));
    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)) - 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:69:22: 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]
   69 |     for(int i = 0; i < w.size(); i++) {
      |                    ~~^~~~~~~~~~
2016_ho_t4.cpp:96:22: 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]
   96 |     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 2656 KB Output is correct
7 Correct 1 ms 2656 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 2664 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 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 2656 KB Output is correct
7 Correct 1 ms 2656 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 2664 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 3 ms 2904 KB Output is correct
29 Correct 8 ms 3396 KB Output is correct
30 Correct 9 ms 3420 KB Output is correct
31 Correct 20 ms 6748 KB Output is correct
32 Correct 12 ms 3932 KB Output is correct
33 Correct 13 ms 4116 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 4020 KB Output is correct
37 Correct 13 ms 3928 KB Output is correct
38 Correct 13 ms 3956 KB Output is correct
39 Correct 14 ms 3932 KB Output is correct
40 Correct 13 ms 3928 KB Output is correct
41 Correct 12 ms 3940 KB Output is correct
42 Correct 11 ms 3684 KB Output is correct
43 Correct 16 ms 4000 KB Output is correct
44 Correct 13 ms 3936 KB Output is correct
45 Correct 11 ms 3704 KB Output is correct
46 Correct 15 ms 5212 KB Output is correct
47 Correct 17 ms 5212 KB Output is correct
48 Correct 26 ms 7512 KB Output is correct
49 Correct 17 ms 7512 KB Output is correct
50 Correct 22 ms 7516 KB Output is correct

Subtask #3
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 2656 KB Output is correct
7 Correct 1 ms 2656 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 2664 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 2812 KB Output is correct
30 Incorrect 1 ms 2652 KB Output isn't correct
31 Halted 0 ms 0 KB -

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 2656 KB Output is correct
7 Correct 1 ms 2656 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 2664 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 3 ms 2904 KB Output is correct
29 Correct 8 ms 3396 KB Output is correct
30 Correct 9 ms 3420 KB Output is correct
31 Correct 20 ms 6748 KB Output is correct
32 Correct 12 ms 3932 KB Output is correct
33 Correct 13 ms 4116 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 4020 KB Output is correct
37 Correct 13 ms 3928 KB Output is correct
38 Correct 13 ms 3956 KB Output is correct
39 Correct 14 ms 3932 KB Output is correct
40 Correct 13 ms 3928 KB Output is correct
41 Correct 12 ms 3940 KB Output is correct
42 Correct 11 ms 3684 KB Output is correct
43 Correct 16 ms 4000 KB Output is correct
44 Correct 13 ms 3936 KB Output is correct
45 Correct 11 ms 3704 KB Output is correct
46 Correct 15 ms 5212 KB Output is correct
47 Correct 17 ms 5212 KB Output is correct
48 Correct 26 ms 7512 KB Output is correct
49 Correct 17 ms 7512 KB Output is correct
50 Correct 22 ms 7516 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 2812 KB Output is correct
55 Incorrect 1 ms 2652 KB Output isn't correct
56 Halted 0 ms 0 KB -