#include <bits/stdc++.h>
#define fast ios_base::sync_with_stdio(0);cin.tie(NULL);cout.tie(NULL)
#define ll long long int
#define ld long double
using namespace std;
const int N = 1e6 + 5;
const int MOD = 1e9 + 7;
int len, n, v[N], res;
vector<int> graph[N];
vector<bool> vis(N);
pair<int, int> tim[N];
void dfs(int node, int dep){
vis[node] = true;
res = max(res, dep);
for(auto k : graph[node]){
if(!vis[k])
dfs(k, dep + 1);
}
}
void solve(){
cin >> len >> n;
for(int i = 1; i <= n; ++i)
cin >> tim[i].first >> tim[i].second;
sort(tim + 1, tim + n + 1);
for(int i = 1; i <= n; ++i){
long double cur = (ld) ((ld) len/(ld) tim[i].second) + tim[i].first;
for(int j = i + 1; j <= n; ++j){
if(cur > ((ld) ((ld) len / (ld) tim[j].second) + tim[j].first))
graph[i].push_back(j);
}
}
vis.resize(n + 1, 0);
int ans = 0;
for(int i = 1; i <= n; ++i){
if(!vis[i]){
dfs(i, 1);
ans = max(ans, res);
res = 0;
}
}
cout << ans << "\n";
}
int main(){
fast;
int t = 1;
// cin >> t;
while(t--)
solve();
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
13 ms |
23824 KB |
Output is correct |
2 |
Incorrect |
15 ms |
23836 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
13 ms |
23904 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
14 ms |
23884 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
13 ms |
23884 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
14 ms |
24072 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |