//No.2714 Amaou
#include <stdio.h>
#include <string.h>

int main(void){
    int N;
    scanf("%d", &N);
    char A[N][4][6];
    for(int i = 0; i < N; i++){
        scanf("%5s %5s %5s %5s", A[i][0], A[i][1], A[i][2], A[i][3]);
    }

    int cnt = 0;
    for(int i = 0; i < N; i++){
        int akai = 0, marui = 0, okii = 0, umai = 0;
        for(int j = 0; j < 4; j++){
            if(strcmp(A[i][j], "akai") == 0){
                akai = 1;
            }
            if(strcmp(A[i][j], "marui") == 0){
                marui = 1;
            }
            if(strcmp(A[i][j], "okii") == 0){
                okii = 1;
            }
            if(strcmp(A[i][j], "umai") == 0){
                umai = 1;
            }
        }
        if((akai + marui + okii + umai) == 4){
            cnt++;
        }
    }

    printf("%d\n", cnt);

    return 0;
}