#include <stdio.h>

int cal(int n1, int n2){
    int a;
    a = n1 + n2;
    return a;
}

void en(){
    printf("\n");
}

void main() {
    int n;
    int m;
    scanf("%d %d", &n, &m);
    int a;
    a = cal(n, m);
    printf("n과 m의 합 : %d", a);

    en();

    printf("%c", 68);

    en();

    for(char c='a'; c<'z'+1; c++){
        printf("%c", c);
    }

    en();

    for(int i=0; i<10; i++){
        printf("%d", i);
    }

    en();

    for(int i=0; i<10; ++i){
        printf("%d", i);
    }
}

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