diff --git a/TST/DS/DS_20_10_30/DS_20_09_30.pdf b/TST/DS/DS_20_09_30/DS_20_09_30.pdf similarity index 100% rename from TST/DS/DS_20_10_30/DS_20_09_30.pdf rename to TST/DS/DS_20_09_30/DS_20_09_30.pdf diff --git a/TST/DS/DS_20_10_30/DS_20_09_30.tex b/TST/DS/DS_20_09_30/DS_20_09_30.tex similarity index 100% rename from TST/DS/DS_20_10_30/DS_20_09_30.tex rename to TST/DS/DS_20_09_30/DS_20_09_30.tex diff --git a/TST/DS/DS_20_10_30/DS_20_09_30_QF.pdf b/TST/DS/DS_20_09_30/DS_20_09_30_QF.pdf similarity index 100% rename from TST/DS/DS_20_10_30/DS_20_09_30_QF.pdf rename to TST/DS/DS_20_09_30/DS_20_09_30_QF.pdf diff --git a/TST/DS/DS_20_10_30/DS_20_09_30_QF.tex b/TST/DS/DS_20_09_30/DS_20_09_30_QF.tex similarity index 100% rename from TST/DS/DS_20_10_30/DS_20_09_30_QF.tex rename to TST/DS/DS_20_09_30/DS_20_09_30_QF.tex diff --git a/TST/DS/DS_20_10_30/exercises.tex b/TST/DS/DS_20_09_30/exercises.tex similarity index 100% rename from TST/DS/DS_20_10_30/exercises.tex rename to TST/DS/DS_20_09_30/exercises.tex