Cod sursa(job #1893303)

Utilizator EuAlexOtaku Hikikomori EuAlex Data 25 februarie 2017 16:39:26
Problema Secventa Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.35 kb
#include <cstdio>
#include <deque>

using namespace std;

const int DIM = 10000;

deque <int> dq;
int v[500005];

char buff[DIM];
int poz = 0;

void read(int &numar) {
    numar = 0;
    char semn = '+';
    while(buff[poz] < '0' || buff[poz] > '9') {
        semn = buff[poz];
        poz ++;
        if(poz == DIM) {
            fread(buff, 1, DIM, stdin);
            poz = 0;
        }
    }
    while('0' <= buff[poz] && buff[poz] <= '9') {
        numar = numar * 10 + (buff[poz] - '0');
        poz ++;
        if(poz == DIM) {
            fread(buff, 1, DIM, stdin);
            poz = 0;
        }
    }
    if(semn == '-') {
        numar = -numar;
    }
}

int main() {
    freopen("secventa.in", "r", stdin);
	freopen("secventa.out", "w", stdout);

    int n, k, minim = -999999999, a, b;
    scanf("%d%d", &n, &k);

    for(int i = 1; i <= n; ++ i) {
        read(v[i]);
        while(!dq.empty() && v[dq.back()] >= v[i]) {
            dq.pop_back();
        }
        dq.push_back(i);
        if(i - dq.front() + 1 > k) {
            dq.pop_front();
        }
        if(i >= k) {
            if(v[dq.front()] > minim) {
                minim = v[dq.front()];
                a = i - k + 1;
                b = i;
            }
        }
    }

    printf("%d %d %d", a, b, minim);

    return 0;
}