#include<stdio.h>
int main(){
int n, r, i, idVoluntario, v[10001]; //10001 = 10^4+1 (porque é menor igual)
while(scanf("%i %i",&n
, &r
) != EOF
) { //zera o vetor (somente a parte que interessa)
for(i=0; i<r; i++) {
v[i] = 0;
}
//lê os identificadores dos voluntários
for(i=0; i<r; i++) {
scanf("%i",&idVoluntario
); v[idVoluntario] = 1;
}
//resolve o enunciado
if(n==r) { //mergulharam o mesmo número de voluntários que voltaram
} else{
for(i=1; i<=n ; i++){
if(v[i]==0) {
}
else{
v[i]=0;
}
}
}
}
return 0;
}
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