Submission #853005

#	Time	Username	Problem	Language	Result	Execution time	Memory
853005		aymanrs	Jakarta Skyscrapers (APIO15_skyscraper)	C++17	57 / 100	1053 ms	2136 KiB

skyscraper

#include<bits/stdc++.h>
using namespace std;
void solve(){
    int n, m;
    cin >> n >> m;
    int b[m], p;
    vector<int> h[n];
    for(int i = 0;i < m;i++){
        cin >> b[i] >> p;
        h[b[i]].push_back(p);
    }
    int d[n];
    bool v[n] = {false};
    for(int i = 0;i < n;i++) if(i!=b[0])d[i] = INT_MAX;
    d[b[0]] = 0;
    while(true){
        int mi = INT_MAX, wi = -1;
        for(int i = 0;i < n;i++){
            if(!v[i] && d[i] < mi){
                mi = d[i];
                wi = i;
            }
        }
        if(wi==-1)break;
        v[wi] = true;
        for(int u : h[wi]){
            for(int j = wi+u,c=1;j < n;j += u,c++) d[j] = min(d[j], d[wi]+c);
            for(int j = wi-u,c=1;j >= 0;j -= u,c++) d[j] = min(d[j], d[wi]+c);
        }
    }
    if(d[b[1]] == INT_MAX) cout << "-1\n";
    else cout << d[b[1]] << '\n';

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

• Subtask 1: 10 / 10
• Subtask 2: 12 / 12
• Subtask 3: 14 / 14
• Subtask 4: 21 / 21
• Subtask 5: 0 / 43