#include<stdio.h>
int t,n,i,j,s,c,ans,a[4];
void f1()
{
if(a[3]&&a[2]&&a[1])a[3]--,ans++;
if(a[2]&&a[1])a[2]--,a[3]++;
if(a[1])a[2]++,a[1]--;a[1]++;
}
void f2()
{
if(a[3])a[3]--,ans++;
if(a[2])a[2]--,a[3]++;
if(a[1])a[1]--,a[2]++;
}
int main()
{
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%d",&t);
if(t==1)
{
if(c==3)
{
f1();
c=0;
}
else c++;
}
else if(t==2)
{
f1();
c=0;
}
else if(t==3)
{
f2();
if(c==3)
{
a[1]++;
c=0;
}
else c++;
}
}
printf("%d",ans);
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
1084 KB |
Output is correct |
2 |
Correct |
0 ms |
1084 KB |
Output is correct |
3 |
Correct |
6 ms |
1084 KB |
Output is correct |
4 |
Correct |
0 ms |
1084 KB |
Output is correct |
5 |
Correct |
0 ms |
1084 KB |
Output is correct |
6 |
Correct |
0 ms |
1084 KB |
Output is correct |
7 |
Correct |
0 ms |
1084 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
1084 KB |
Output is correct |
2 |
Correct |
0 ms |
1084 KB |
Output is correct |
3 |
Correct |
6 ms |
1084 KB |
Output is correct |
4 |
Correct |
0 ms |
1084 KB |
Output is correct |
5 |
Correct |
0 ms |
1084 KB |
Output is correct |
6 |
Correct |
0 ms |
1084 KB |
Output is correct |
7 |
Correct |
0 ms |
1084 KB |
Output is correct |
8 |
Correct |
6 ms |
1084 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
1084 KB |
Output is correct |
2 |
Correct |
0 ms |
1084 KB |
Output is correct |
3 |
Correct |
0 ms |
1084 KB |
Output is correct |
4 |
Correct |
3 ms |
1084 KB |
Output is correct |
5 |
Correct |
5 ms |
1084 KB |
Output is correct |
6 |
Correct |
5 ms |
1084 KB |
Output is correct |
7 |
Correct |
6 ms |
1084 KB |
Output is correct |
8 |
Correct |
0 ms |
1084 KB |
Output is correct |
9 |
Correct |
6 ms |
1084 KB |
Output is correct |
10 |
Correct |
0 ms |
1084 KB |
Output is correct |
11 |
Correct |
3 ms |
1084 KB |
Output is correct |
12 |
Correct |
0 ms |
1084 KB |
Output is correct |
13 |
Correct |
6 ms |
1084 KB |
Output is correct |
14 |
Correct |
3 ms |
1084 KB |
Output is correct |
15 |
Correct |
6 ms |
1084 KB |
Output is correct |