Cod sursa(job #1775232)

Utilizator grimmerFlorescu Luca grimmer Data 10 octombrie 2016 08:58:48
Problema Secventa Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.74 kb
#include <fstream>
#include <deque>
using namespace std;

int v[500001];
deque<int> q;
int max_base = -99999;

class InputReader {
    public:
        InputReader() {}
        InputReader(const char *file_name) {
            input_file = fopen(file_name, "r");
            cursor = 0;
            fread(buffer, SIZE, 1, input_file);
        }
        inline InputReader &operator >>(int &n) {
            while(buffer[cursor] < '0' || buffer[cursor] > '9') {
                advance();
            }
            n = 0;
            while('0' <= buffer[cursor] && buffer[cursor] <= '9') {
                n = n * 10 + buffer[cursor] - '0';
                advance();
            }
            return *this;
        }
    private:
        FILE *input_file;
        static const int SIZE = 1 << 17;
        int cursor;
        char buffer[SIZE];
        inline void advance() {
            ++ cursor;
            if(cursor == SIZE) {
                cursor = 0;
                fread(buffer, SIZE, 1, input_file);
            }
        }
};

InputReader cin ("secventa.in");
ofstream cout ("secventa.out");

int main()
{
    int i, k, n, x, l, r;

    cin>>n>>k;
    cin>>x;
    v[0] = x;
    q.push_back(0);

    for(i = 1; i < n; ++i){
        cin>>v[i];

        while(!q.empty() && v[q.back()] >= v[i]){
            q.pop_back();
        }

        q.push_back(i);

        while(q.front() == i-k){
            q.pop_front();
        }

        if(i >= k && q.front() >= i-k+1){
            if(v[q.front()] > max_base){
                max_base = v[q.front()];
                l = i - k + 1;
                r = i;
            }
        }
    }

    cout<<l+1<<" "<<r+1<<" "<<max_base;
    return 0;
}