oj.uz

Submission #341118

# Submission time Handle Problem Language Result Execution time Memory
341118 2020-12-29T03:11:12 Z juggernaut Crazy old lady (IZhO13_crazy) C++14
100 / 100
 19 ms 512 KB 
#include<bits/stdc++.h>
using namespace std;
int a[1000];
bool flag[1001];
int main(){
	int test;
	scanf("%d",&test);
	while(test--){
		int ans=0,i,j,n,t;
		scanf("%d",&n);
		for(i=0;i<n;i++)scanf("%d",&a[i]);
		for(i=1;i<=n;i++){
			for(j=1;j<=n;j++)flag[j]=false;
			flag[a[0]]=true;
			for(j=1;j<n;j++){
				t=j;
				if(t>=i)t++;
				if(!flag[t]&&a[j]!=t)break;
				flag[a[j]]=true;
			}
			if(j==n){
				if(ans)ans=-1;
				else ans=i;
			}
		}
		ans=max(ans,0);
		printf("%d\n",ans);
	}
}

Compilation message

crazy.cpp: In function 'int main()':
crazy.cpp:7:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    7 |  scanf("%d",&test);
      |  ~~~~~^~~~~~~~~~~~
crazy.cpp:10:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   10 |   scanf("%d",&n);
      |   ~~~~~^~~~~~~~~
crazy.cpp:11:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 |   for(i=0;i<n;i++)scanf("%d",&a[i]);
      |                   ~~~~~^~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 2 ms 364 KB Output is correct
9 Correct 3 ms 364 KB Output is correct
10 Correct 4 ms 364 KB Output is correct
11 Correct 5 ms 512 KB Output is correct
12 Correct 4 ms 364 KB Output is correct
13 Correct 6 ms 364 KB Output is correct
14 Correct 7 ms 364 KB Output is correct
15 Correct 8 ms 364 KB Output is correct
16 Correct 11 ms 364 KB Output is correct
17 Correct 11 ms 364 KB Output is correct
18 Correct 16 ms 492 KB Output is correct
19 Correct 14 ms 364 KB Output is correct
20 Correct 19 ms 364 KB Output is correct