# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1078857 | mickey080929 | Radio Towers (IOI22_towers) | C++17 | 4070 ms | 2000 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "towers.h"
#include <bits/stdc++.h>
using namespace std;
const int inf = 2e9 + 10;
int N;
vector<int> H;
void init(int _N, vector<int> _H) {
N = _N;
H = _H;
}
int max_towers(int L, int R, int D) {
vector<int> id;
for (int i=L; i<=R; i++) {
id.push_back(i);
}
sort(id.begin(), id.end(), [&] (int &u, int &v) { return H[u] > H[v]; });
int ans = 1;
vector<int> pos = {L-1, R+1};
for (int i=0; i<id.size(); i++) {
vector<int> cur = pos;
cur.push_back(id[i]);
sort(cur.begin(), cur.end());
int cnt = 0;
for (int j=0; j+1<cur.size(); j++) {
int lh, rh;
if (cur[j] == L-1) lh = inf;
else lh = H[cur[j]];
if (cur[j+1] == R+1) rh = inf;
else rh = H[cur[j+1]];
for (int k=cur[j]+1; k<=cur[j+1]-1; k++) {
if (H[k] <= min(lh, rh) - D) {
cnt ++;
break;
}
}
}
if (ans < cnt) {
ans = cnt;
pos = cur;
}
}
return ans;
}
Compilation message (stderr)
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