oj.uz

답안 #544564

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
544564 2022-04-02T11:15:20 Z SavicS Jakarta Skyscrapers (APIO15_skyscraper) C++17
22 / 100
 8 ms 7912 KB 
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <bits/stdc++.h>
 
using namespace std;
using namespace __gnu_pbds;
 
typedef long long ll;
typedef long double ld;
 
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef pair<ld,ld> pdd;
 
#define ff(i,a,b) for(int i = a; i <= b; i++)
#define fb(i,b,a) for(int i = b; i >= a; i--)
#define trav(a,x) for (auto& a : x)
 
#define sz(a) (int)(a).size()
#define pb push_back
#define fi first
#define se second
#define lb lower_bound
#define ub upper_bound
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
 
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

template<typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

// os.order_of_key(k) the number of elements in the os less than k
// *os.find_by_order(k)  print the k-th smallest number in os(0-based)

const int mod = 1000000007;
const int inf = 1e9 + 5;
const int mxN = 100005; 

int n, m;
int B[mxN];
int P[mxN];

vector<pii> g[mxN];
int dist[mxN];

map<int,int> mp[mxN];

int id[mxN];
bool cmp(int s1, int s2){
    return B[s1] < B[s2];
}

int main() {
    cin.tie(0)->sync_with_stdio(0);

    cin >> m >> n;
    ff(i,0,n - 1)cin >> B[i] >> P[i];

    int S = B[0];
    int T = B[1];

    ff(i,0,n - 1)id[i] = i;
    sort(id, id + n, cmp);

    ff(i,0,n - 1){
        int pos = B[id[i]] + P[id[i]], cost = 1;
        while(pos < m){
            g[B[id[i]]].pb({pos, cost}); cost += 1;
            if(mp[pos].count(P[i]) == 1)break;
            mp[pos][P[i]] = 1;
            pos += P[id[i]];
        }
    }    

    ff(i,0,m - 1)mp[i].clear();

    ff(i,0,n - 1){
        int pos = B[id[i]] - P[id[i]], cost = 1;
        while(pos >= 0){
            g[B[id[i]]].pb({pos, cost}); cost += 1;
            if(mp[pos].count(P[id[i]]) == 1)break;
            mp[pos][P[id[i]]] = 1;
            pos -= P[id[i]];
        }
    }

    ff(i,0,m - 1)dist[i] = inf;
    priority_queue<pii, vector<pii>, greater<pii>> pq;

    pq.push({dist[S] = 0, S});
    while(sz(pq)){
        pii v = pq.top(); pq.pop();
        if(dist[v.se] < v.fi)continue;
        for(auto c : g[v.se]){
            int u = c.fi;
            int w = c.se;
            if(dist[u] > v.fi + w){
                pq.push({dist[u] = v.fi + w, u});
            }
        }
    }

    cout << (dist[T] == inf ? -1 : dist[T]) << '\n';

    return 0;
}
/*

6 4
4 5
0 3
5 1
4 1

18 10
1 2
0 12
1 17
4 1
3 1
5 13
14 7
5 16
15 6
9 5

51 9
9 1
45 2
42 38
17 9
39 44
35 1
22 41
43 35
3 36
 
22 19
10 10
13 5
1 1
17 17
2 3
3 9
20 22
18 1
3 5
11 16
7 16
2 22
20 4
11 19
7 1
16 1
11 14
8 9
3 18

5 3 
0 2 
1 1 
4 1
 
// probati bojenje sahovski
*/

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 5 ms 7380 KB Output is correct
3 Correct 5 ms 7384 KB Output is correct
4 Correct 4 ms 7388 KB Output is correct
5 Correct 4 ms 7392 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7380 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 6 ms 7380 KB Output is correct
3 Correct 5 ms 7380 KB Output is correct
4 Correct 4 ms 7384 KB Output is correct
5 Correct 5 ms 7380 KB Output is correct
6 Correct 6 ms 7380 KB Output is correct
7 Correct 5 ms 7380 KB Output is correct
8 Correct 4 ms 7380 KB Output is correct
9 Correct 5 ms 7380 KB Output is correct
10 Correct 4 ms 7424 KB Output is correct
11 Correct 7 ms 7508 KB Output is correct
12 Correct 4 ms 7508 KB Output is correct
13 Correct 5 ms 7396 KB Output is correct
14 Correct 5 ms 7508 KB Output is correct
15 Correct 5 ms 7508 KB Output is correct

Subtask #3
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 7356 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 5 ms 7332 KB Output is correct
4 Correct 4 ms 7388 KB Output is correct
5 Correct 4 ms 7400 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 5 ms 7380 KB Output is correct
8 Correct 5 ms 7384 KB Output is correct
9 Correct 6 ms 7288 KB Output is correct
10 Correct 5 ms 7384 KB Output is correct
11 Correct 7 ms 7520 KB Output is correct
12 Correct 6 ms 7508 KB Output is correct
13 Correct 5 ms 7464 KB Output is correct
14 Correct 6 ms 7512 KB Output is correct
15 Correct 5 ms 7524 KB Output is correct
16 Correct 6 ms 7432 KB Output is correct
17 Correct 7 ms 7892 KB Output is correct
18 Correct 6 ms 7636 KB Output is correct
19 Correct 5 ms 7508 KB Output is correct
20 Correct 6 ms 7640 KB Output is correct
21 Correct 5 ms 7380 KB Output is correct
22 Correct 6 ms 7516 KB Output is correct
23 Correct 6 ms 7504 KB Output is correct
24 Correct 8 ms 7892 KB Output is correct
25 Correct 6 ms 7764 KB Output is correct
26 Incorrect 7 ms 7784 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 7284 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7380 KB Output is correct
4 Correct 4 ms 7380 KB Output is correct
5 Correct 4 ms 7388 KB Output is correct
6 Correct 7 ms 7388 KB Output is correct
7 Correct 7 ms 7380 KB Output is correct
8 Correct 5 ms 7380 KB Output is correct
9 Correct 7 ms 7380 KB Output is correct
10 Correct 5 ms 7384 KB Output is correct
11 Correct 6 ms 7508 KB Output is correct
12 Correct 5 ms 7524 KB Output is correct
13 Correct 5 ms 7432 KB Output is correct
14 Correct 5 ms 7524 KB Output is correct
15 Correct 6 ms 7532 KB Output is correct
16 Correct 4 ms 7508 KB Output is correct
17 Correct 8 ms 7912 KB Output is correct
18 Correct 5 ms 7520 KB Output is correct
19 Correct 5 ms 7508 KB Output is correct
20 Correct 5 ms 7664 KB Output is correct
21 Correct 5 ms 7396 KB Output is correct
22 Correct 5 ms 7508 KB Output is correct
23 Correct 5 ms 7508 KB Output is correct
24 Correct 7 ms 7784 KB Output is correct
25 Correct 7 ms 7652 KB Output is correct
26 Incorrect 6 ms 7764 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 7308 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7392 KB Output is correct
4 Correct 8 ms 7392 KB Output is correct
5 Correct 4 ms 7392 KB Output is correct
6 Correct 5 ms 7380 KB Output is correct
7 Correct 4 ms 7384 KB Output is correct
8 Correct 4 ms 7380 KB Output is correct
9 Correct 4 ms 7380 KB Output is correct
10 Correct 6 ms 7388 KB Output is correct
11 Correct 6 ms 7508 KB Output is correct
12 Correct 5 ms 7524 KB Output is correct
13 Correct 6 ms 7392 KB Output is correct
14 Correct 6 ms 7528 KB Output is correct
15 Correct 5 ms 7512 KB Output is correct
16 Correct 5 ms 7512 KB Output is correct
17 Correct 8 ms 7892 KB Output is correct
18 Correct 6 ms 7636 KB Output is correct
19 Correct 5 ms 7516 KB Output is correct
20 Correct 5 ms 7636 KB Output is correct
21 Correct 5 ms 7380 KB Output is correct
22 Correct 5 ms 7508 KB Output is correct
23 Correct 6 ms 7620 KB Output is correct
24 Correct 8 ms 7788 KB Output is correct
25 Correct 6 ms 7672 KB Output is correct
26 Incorrect 7 ms 7764 KB Output isn't correct
27 Halted 0 ms 0 KB -