#include <stdio.h>
#include <stdlib.h>
int sprawdz_pierwsze(int m, int n){
int p[100000];
int y,x;
for(x=0;x<n-m+1;x++){
p[x]=m+x;
if(p[x]==2){
}
else{
for(y=2;y<p[x];y++){
if(p[x]%y==0){
break;
}
if(y==p[x]-1){
}
}
}
}
}
int main(int argc, char *argv[]) {
int m[10],n[10],y,t;
for(y=0;y<t;y++){
scanf("%d %d",&m
[y
],&n
[y
]); }
for(y=0;y<t;y++){
sprawdz_pierwsze(m[y],n[y]);
}
return 0;
}
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