問題64 別解修正 (Issue 1796)

Author: greymd

answer/64.md

@@ -4,7 +4,7 @@ $ seq -f '20210101 %g day' 0 364 | date -f - '+%F %w' | awk '/2$/{print $1}' | a
 ```
 ### 別解
 ```
-別解1（山田）$ dateutils.dseq 2020-01-01 2020-12-31 -f "%F %w" | awk -F'[- ]' '++a[$2,$4]==3' | dateutils.dgrep '%w=02' -o
-別解2（田代）$ dateutils.dseq 2020-01-07 7 2020-12-31 -f "%F %c" | awk '$2==03{print $1}'
-別解3（上杉、田代）$ seq 1 12 | while read n; do dateutils.dconv 2020-$n-03-Tue -i '%Y-%m-%c-%a' -f '%F'; done
+別解1（山田）$ dateutils.dseq 2021-01-01 2021-12-31 -f "%F %w" | awk -F'[- ]' '++a[$2,$4]==3' | dateutils.dgrep '%w=02' -o
+別解2（田代）$ dateutils.dseq 2021-01-05 7 2021-12-31 -f "%F %c" | awk '$2==03{print $1}'
+別解 3（上杉、田代）$ seq 1 12 | while read n; do dateutils.dconv 2021-$n-03-Tue -i '%Y-%m-%c-%a' -f '%F'; done
 ```