#include <stdio.h>
#define MAX 1000
void le_matriz(double M[][MAX], int n, int m){
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
scanf("%lf", &M[i][j]);
}
}
}
void imprime_matriz(double M[][MAX], int n, int m){
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
printf("%.2lf", M[i][j]);
}
printf("\n");
}
}
int verifica_simetrica(double M[][MAX], int n, int m){
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
if(M[i][j] != M[j][i]){
return 1;
}
}
}
return 0;
}
int main() {
double A[MAX][MAX];
int n, m;
scanf("%d %d", &n, &m);
le_matriz(A, n, m);
if(verifica_simetrica(A, n, m)){
printf("Matriz simétrica!");
} else {
printf("Matriz não simétrica.");
}
return 0;
}
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