import java.util.*;
import java.math.*;

public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int q = sc.nextInt();
    String s = sc.next();
    int[] l = new int[q];
    int[] r = new int[q];

    for (int i = 0; i < q; i++) {
      l[i] = sc.nextInt();
      r[i] = sc.nextInt();
    }

    int[] data = new int[n+1];

    for (int i = 0; i < n-1; i++) {
      if (s.substring(i,i+2).equals("AC")) {
        data[i+1] = data[i] + 1;
      } else {
        data[i+1] = data[i];
      }
    }

    // for (int i = 0; i < n; i++) {
    //   System.out.print(data[i]+" ");
    // }

    // System.out.println();

    for (int i = 0; i < q; i++) {
      System.out.println(data[r[i]-1]-data[l[i]-1]);
    }

  }

} import java.util.*; util.* java import java.math.*; math.* java public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int q = sc.nextInt();
    String s = sc.next();
    int[] l = new int[q];
    int[] r = new int[q];

    for (int i = 0; i < q; i++) {
      l[i] = sc.nextInt();
      r[i] = sc.nextInt();
    }

    int[] data = new int[n+1];

    for (int i = 0; i < n-1; i++) {
      if (s.substring(i,i+2).equals("AC")) {
        data[i+1] = data[i] + 1;
      } else {
        data[i+1] = data[i];
      }
    }

    // for (int i = 0; i < n; i++) {
    //   System.out.print(data[i]+" ");
    // }

    // System.out.println();

    for (int i = 0; i < q; i++) {
      System.out.println(data[r[i]-1]-data[l[i]-1]);
    }

  }

} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int q = sc.nextInt();
    String s = sc.next();
    int[] l = new int[q];
    int[] r = new int[q];

    for (int i = 0; i < q; i++) {
      l[i] = sc.nextInt();
      r[i] = sc.nextInt();
    }

    int[] data = new int[n+1];

    for (int i = 0; i < n-1; i++) {
      if (s.substring(i,i+2).equals("AC")) {
        data[i+1] = data[i] + 1;
      } else {
        data[i+1] = data[i];
      }
    }

    // for (int i = 0; i < n; i++) {
    //   System.out.print(data[i]+" ");
    // }

    // System.out.println();

    for (int i = 0; i < q; i++) {
      System.out.println(data[r[i]-1]-data[l[i]-1]);
    }

  } main {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int q = sc.nextInt();
    String s = sc.next();
    int[] l = new int[q];
    int[] r = new int[q];

    for (int i = 0; i < q; i++) {
      l[i] = sc.nextInt();
      r[i] = sc.nextInt();
    }

    int[] data = new int[n+1];

    for (int i = 0; i < n-1; i++) {
      if (s.substring(i,i+2).equals("AC")) {
        data[i+1] = data[i] + 1;
      } else {
        data[i+1] = data[i];
      }
    }

    // for (int i = 0; i < n; i++) {
    //   System.out.print(data[i]+" ");
    // }

    // System.out.println();

    for (int i = 0; i < q; i++) {
      System.out.println(data[r[i]-1]-data[l[i]-1]);
    }

  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int q = sc.nextInt(); q sc.nextInt() sc.nextInt sc String s = sc.next(); s sc.next() sc.next sc int[] l = new int[q]; l new int[q] q int[] r = new int[q]; r new int[q] q for (int i = 0; i < q; i++) {
      l[i] = sc.nextInt();
      r[i] = sc.nextInt();
    } int i = 0; int i = 0; i 0 i < q i q i++ i++ i {
      l[i] = sc.nextInt();
      r[i] = sc.nextInt();
    } {
      l[i] = sc.nextInt();
      r[i] = sc.nextInt();
    } l[i] = sc.nextInt() l[i] l i sc.nextInt() sc.nextInt sc r[i] = sc.nextInt() r[i] r i sc.nextInt() sc.nextInt sc int[] data = new int[n+1]; data new int[n+1] n+1 n 1 for (int i = 0; i < n-1; i++) {
      if (s.substring(i,i+2).equals("AC")) {
        data[i+1] = data[i] + 1;
      } else {
        data[i+1] = data[i];
      }
    } int i = 0; int i = 0; i 0 i < n-1 i n-1 n 1 i++ i++ i {
      if (s.substring(i,i+2).equals("AC")) {
        data[i+1] = data[i] + 1;
      } else {
        data[i+1] = data[i];
      }
    } {
      if (s.substring(i,i+2).equals("AC")) {
        data[i+1] = data[i] + 1;
      } else {
        data[i+1] = data[i];
      }
    } if (s.substring(i,i+2).equals("AC")) {
        data[i+1] = data[i] + 1;
      } else {
        data[i+1] = data[i];
      } s.substring(i,i+2).equals("AC") s.substring(i,i+2).equals s.substring(i,i+2) s.substring s i i+2 i 2 "AC" {
        data[i+1] = data[i] + 1;
      } data[i+1] = data[i] + 1 data[i+1] data i+1 i 1 data[i] + 1 data[i] data i 1 {
        data[i+1] = data[i];
      } data[i+1] = data[i] data[i+1] data i+1 i 1 data[i] data i for (int i = 0; i < q; i++) {
      System.out.println(data[r[i]-1]-data[l[i]-1]);
    } int i = 0; int i = 0; i 0 i < q i q i++ i++ i {
      System.out.println(data[r[i]-1]-data[l[i]-1]);
    } {
      System.out.println(data[r[i]-1]-data[l[i]-1]);
    } System.out.println(data[r[i]-1]-data[l[i]-1]) System.out.println System.out System System.out data[r[i]-1]-data[l[i]-1] data[r[i]-1] data r[i]-1 r[i] r i 1 data[l[i]-1] data l[i]-1 l[i] l i 1 String[] args args public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int q = sc.nextInt();
    String s = sc.next();
    int[] l = new int[q];
    int[] r = new int[q];

    for (int i = 0; i < q; i++) {
      l[i] = sc.nextInt();
      r[i] = sc.nextInt();
    }

    int[] data = new int[n+1];

    for (int i = 0; i < n-1; i++) {
      if (s.substring(i,i+2).equals("AC")) {
        data[i+1] = data[i] + 1;
      } else {
        data[i+1] = data[i];
      }
    }

    // for (int i = 0; i < n; i++) {
    //   System.out.print(data[i]+" ");
    // }

    // System.out.println();

    for (int i = 0; i < q; i++) {
      System.out.println(data[r[i]-1]-data[l[i]-1]);
    }

  }

} public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int q = sc.nextInt();
    String s = sc.next();
    int[] l = new int[q];
    int[] r = new int[q];

    for (int i = 0; i < q; i++) {
      l[i] = sc.nextInt();
      r[i] = sc.nextInt();
    }

    int[] data = new int[n+1];

    for (int i = 0; i < n-1; i++) {
      if (s.substring(i,i+2).equals("AC")) {
        data[i+1] = data[i] + 1;
      } else {
        data[i+1] = data[i];
      }
    }

    // for (int i = 0; i < n; i++) {
    //   System.out.print(data[i]+" ");
    // }

    // System.out.println();

    for (int i = 0; i < q; i++) {
      System.out.println(data[r[i]-1]-data[l[i]-1]);
    }

  }

} Main
import java.util.*;
import java.math.*;

public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int q = sc.nextInt();
    String s = sc.next();
    int[] l = new int[q];
    int[] r = new int[q];

    for (int i = 0; i < q; i++) {
      l[i] = sc.nextInt();
      r[i] = sc.nextInt();
    }

    int[] data = new int[n+1];

    for (int i = 0; i < n-1; i++) {
      if (s.substring(i,i+2).equals("AC")) {
        data[i+1] = data[i] + 1;
      } else {
        data[i+1] = data[i];
      }
    }

    // for (int i = 0; i < n; i++) {
    //   System.out.print(data[i]+" ");
    // }

    // System.out.println();

    for (int i = 0; i < q; i++) {
      System.out.println(data[r[i]-1]-data[l[i]-1]);
    }

  }

}
