#include <fstream>
using namespace std;

class InputReader
{
    public:
        InputReader() {}
        InputReader(const char* file_name)
        {
            input_file = fopen(file_name,"r");
            cursor = 0;
            fread(buff,SIZE,1,input_file);
        }

        inline InputReader &operator >>(int& n)
        {
            n = 0;
            while (buff[cursor] < '0' || buff[cursor] > '9')
                advance();
            while (buff[cursor] >= '0' && buff[cursor] <= '9') {
                n = n * 10 + buff[cursor] - '0';
                advance();
            }
            return *this;
        }

    private:
        static const int SIZE = 1<<17;
        int cursor;
        FILE *input_file;
        char buff[SIZE];

        inline void advance() {
            cursor++;
            if (cursor == SIZE) {
                cursor = 0;
                fread(buff,SIZE,1,input_file);
            }
        }
};

int rmq[20][100005];
int n,m;
int log[100005];

int main()
{
    InputReader fin = InputReader("rmq.in");
    ofstream fout("rmq.out");

    fin >> n >> m;
    for (int i = 1; i <= n; i++)
        fin >> rmq[0][i];

    for (int i = 1, k = 0; i <= n; i++) {
        if (1<<k+1 <= i) k++;
        log[i] = k;
    }

    for (int i = 1; (1<<i) <= n; i++)
        for (int j = 1; j + (1<<i) - 1 <= n; j++)
            rmq[i][j] = min(rmq[i-1][j],rmq[i-1][j+(1<<(i-1))]);

    int x,y,k;
    for (int i = 1; i <= m; i++)
    {
        fin >> x >> y;
        k = log[y-x+1];
        fout << "d " << k << "\n";
        fout << min(rmq[k][x],rmq[k][y-(1<<k)+1]) << "\n";
    }
}