diff --git a/solution/1600-1699/1691.Maximum Height by Stacking Cuboids /README.md b/solution/1600-1699/1691.Maximum Height by Stacking Cuboids/README.md
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rename from solution/1600-1699/1691.Maximum Height by Stacking Cuboids /README.md
rename to solution/1600-1699/1691.Maximum Height by Stacking Cuboids/README.md