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Cod sursa(job #905896)
#include <algorithm>
#include <deque>
#include <fstream>
#include <iostream>
#include <utility>
using namespace std;
#ifdef INFOARENA
ifstream in("secventa.in");
ofstream out("secventa.out");
#else
#define out cout
#define in cin
#endif
const int INF = 1 << 30;
const int MAX_N = 500100;
int N, K;
int v[MAX_N];
deque<int> dq;
int main() {
in >> N >> K;
int best = -INF, b = 0;
for (int i = 1; i <= N; ++i) {
in >> v[i];
while (!dq.empty() && v[dq.back()] > v[i]) {
dq.pop_back();
}
dq.push_back(i);
if (dq.front() == i - K) {
dq.pop_front();
}
if (i >= K && v[dq.front()] > best) {
best = v[dq.front()];
b = i;
}
}
out << b - K + 1 << ' ' << b << ' ' << best;
return 0;
}