CREATE TABLE table_204_771 (id DECIMAL, "rank" DECIMAL, "nation" TEXT, "gold" DECIMAL, "silver" DECIMAL, "bronze" DECIMAL, "total" DECIMAL)

name a country that only had one of each kind of medal .
SELECT "nation" FROM table_204_771 WHERE "gold" = 1 AND "silver" = 1 AND "bronze" = 1
SELECT "nation" FROM "table_204_771" WHERE "bronze" = 1 AND "gold" = 1 AND "silver" = 1