oj.uz

Submission #239134

# Submission time Handle Problem Language Result Execution time Memory
239134 2020-06-14T14:43:57 Z aggu_01000101 Jakarta Skyscrapers (APIO15_skyscraper) C++14
0 / 100
 7 ms 384 KB 
#include <bits/stdc++.h>
#define int long long
#define INF 1000000000000000
#define lchild(i) (i*2 + 1)
#define rchild(i) (i*2 + 2)
#define mid(l, u) ((l+u)/2)
#define x(p) p.first
#define y(p) p.second
#define MOD 998244353
int n, m;
using namespace std;

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>n>>m;
    int s = 0, t= 0;
    vector<int> adj[n];
    map<pair<int, int>, bool> ez;
    for(int i = 0;i<m;i++){
        int b, p;
        cin>>b>>p;
        if(!ez[{b, p}]) adj[b].push_back(p);
        ez[{b, p}] = true;
        if(i==0) s = b;
        if(i==1) t = b;
    }
    int dist[n];
    for(int i = 0;i<n;i++) dist[i] = INF;
    dist[s] = 0;
    priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> pq;
    pq.push({0, s});
    while(!pq.empty()){
        pair<int, int> curr = pq.top();
        pq.pop();
        if(curr.first != dist[curr.second]) continue;
        for(int j: adj[curr.second]){
            int len = 0;
            for(int i = curr.second + j;i<n;i+=j){
                len++;
                if(curr.first + len < dist[i]){
                    dist[i] = curr.first + len;
                    pq.push({dist[i], i});
                }
                if(ez[{i, j}]) break;
            }
            len = 0;
            for(int i = curr.second - j;i>0;i-=j){
                len++;
                if(curr.first + len < dist[i]){
                    dist[i] = curr.first + len;
                    pq.push({dist[i], i});
                }
                if(ez[{i, j}]) break;
            }
        }
    }
    cout<<dist[t]<<"\n";
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 7 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Incorrect 5 ms 384 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Incorrect 6 ms 384 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Incorrect 5 ms 384 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Incorrect 5 ms 384 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Incorrect 5 ms 384 KB Output isn't correct
5 Halted 0 ms 0 KB -