Submission #6141463


Source Code Expand

from collections import Counter
n,m=map(int,input().split())
x=[int(i) for i in input().split()]
v=[[] for i in range(m)]
for i in x:
    v[i%m].append(i)
ans=0
for i in range(1,m//2):
    d=len(v[i])-len(v[m-i])
    if d<0:
        v[i],v[m-i]=v[m-i],v[i]
    c=sorted(Counter(v[i]).items(),key=lambda x:x[1])
    p=0
    for t in c:
        p+=2*(t[1]//2)
    ans+=len(v[m-i])+min(p,2*(d//2))

ans+=len(v[0])+(len(v[m//2])//2 if m%2==0 else 0)
print(ans)

Submission Info

Submission Time
Task D - Pair Cards
User keroru
Language PyPy3 (2.4.0)
Score 0
Code Size 474 Byte
Status WA
Exec Time 568 ms
Memory 82796 KB

Judge Result

Set Name sample all
Score / Max Score 0 / 0 0 / 700
Status
AC × 2
AC × 5
WA × 29
Set Name Test Cases
sample sample-01.txt, sample-02.txt
all sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt, 01-11.txt, 01-12.txt, 01-13.txt, 01-14.txt, 01-15.txt, 01-16.txt, 01-17.txt, 01-18.txt, 01-19.txt, 01-20.txt, 01-21.txt, 01-22.txt, 01-23.txt, 01-24.txt, 01-25.txt, 01-26.txt, 01-27.txt, 01-28.txt, 01-29.txt, 01-30.txt, sample-01.txt, sample-02.txt
Case Name Status Exec Time Memory
01-01.txt WA 164 ms 38256 KB
01-02.txt WA 211 ms 56432 KB
01-03.txt WA 203 ms 54384 KB
01-04.txt WA 205 ms 53616 KB
01-05.txt WA 241 ms 54000 KB
01-06.txt WA 231 ms 54764 KB
01-07.txt WA 231 ms 53740 KB
01-08.txt WA 276 ms 54892 KB
01-09.txt WA 281 ms 55276 KB
01-10.txt WA 568 ms 82796 KB
01-11.txt WA 481 ms 75116 KB
01-12.txt WA 207 ms 55876 KB
01-13.txt WA 307 ms 58692 KB
01-14.txt WA 203 ms 54380 KB
01-15.txt WA 216 ms 52972 KB
01-16.txt WA 228 ms 53996 KB
01-17.txt WA 242 ms 52460 KB
01-18.txt WA 281 ms 56556 KB
01-19.txt WA 292 ms 57324 KB
01-20.txt WA 330 ms 64236 KB
01-21.txt WA 203 ms 54380 KB
01-22.txt WA 211 ms 52464 KB
01-23.txt WA 214 ms 52336 KB
01-24.txt WA 261 ms 54384 KB
01-25.txt WA 336 ms 59888 KB
01-26.txt WA 341 ms 62444 KB
01-27.txt AC 301 ms 54292 KB
01-28.txt WA 297 ms 51760 KB
01-29.txt WA 266 ms 47084 KB
01-30.txt WA 341 ms 55200 KB
sample-01.txt AC 163 ms 38256 KB
sample-02.txt AC 162 ms 38256 KB