#include <iostream>
#include <stdlib.h>
#include <string>
using namespace std;

int main()
{
    long length = 0;
    int answers_count = 0,over, result, total = 0;
    string str_;

    while(!(cin>>length) || length > 1000000000)
        cin.clear();

    while(!(cin>>answers_count) || answers_count > 5000)
        cin.clear();

    string **str = new string*[answers_count];
    for(int i = 0; i < answers_count; i++)
    {
        str[i] = new string[3];
        for(int j = 0; j < 3; j++)
        {
            cin>>str_;
            str[i][j] = str_;
        }
    }

    while(cin>>over && over != -1);

    for(int i = 0; i < answers_count; i++){
        int first_pos = atoi(str[i][0].c_str());
        int last_pos = atoi(str[i][1].c_str());
        result = last_pos - first_pos;
        if((result+1)%2 == 0 && str[i][2] =="even" || (result+1) % 2!= 0 && str[i][2] =="odd")
            total++;
    }
    cout<<total<<endl;
    system("pause");
    return 0;
}

sometime it's "wrong answer",sometime it's "complication error",who can analyse it detailed,thanks a lot!