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Submission #730817

# Submission time Handle Problem Language Result Execution time Memory
730817 2023-04-26T13:18:17 Z Jarif_Rahman Jakarta Skyscrapers (APIO15_skyscraper) C++17
0 / 100
 2 ms 1748 KB 
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;
const int inf = 1e9, N = 30000;

int B[N], P[N];
vector<int> residents[N];
bitset<N> bl;
int dis[N];
vector<int> Q[N+1];

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

    int n, m; cin >> n >> m;
    for(int i = 0; i < m; i++){
        cin >> B[i] >> P[i];
        residents[B[i]].pb(i);
    }

    fill(dis, dis+m, inf);
    Q[0].pb(0);

    for(int d = 0; d <= N; d++) for(int nd: Q[d]){
        if(nd == 1){
            cout << d << "\n";
            exit(0);
        }
        if(bl[nd]) continue;
        bl[nd] = 1;
        for(int i = B[nd], dd = d; i < n; i+=P[nd], dd++) for(int x: residents[i]) if(dd < dis[x]){
            dis[x] = dd;
            Q[dd].pb(x);
        }
        for(int i = B[nd]-P[nd], dd = d+1; i >= 0; i-=P[nd], dd++) for(int x: residents[i]) if(dd < dis[x]){
            dis[x] = dd;
            Q[dd].pb(x);
        }
    }

    cout << "-1\n";
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1748 KB Output is correct
2 Incorrect 1 ms 1748 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1748 KB Output is correct
2 Incorrect 1 ms 1748 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1748 KB Output is correct
2 Incorrect 1 ms 1748 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1748 KB Output is correct
2 Incorrect 2 ms 1748 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1748 KB Output is correct
2 Incorrect 2 ms 1748 KB Output isn't correct
3 Halted 0 ms 0 KB -