Solution :
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| #include<stdio.h> | |
| int ara[1000005]; | |
| int invara[1000005]; | |
| int main() | |
| { | |
| int n,i,count; | |
| while(scanf("%d",&n)==1){ | |
| count=0; | |
| if(n==0) | |
| break; | |
| for(i=1;i<=n;i++){ | |
| scanf("%d",&ara[i]); | |
| invara[ara[i]]=i; | |
| } | |
| for(i=1;i<=n;i++){ | |
| if(ara[i]==invara[i]) | |
| count++; | |
| } | |
| if(count==n) | |
| printf("ambiguous\n"); | |
| else | |
| printf("not ambiguous\n"); | |
| } | |
| return 0; | |
| } |
