This problem is in Contest(s) below:
Contest 1236:2023暑期135下午c++4期(塘下)
Contest 1367:2024秋周六早c2
Contest 1378:2024秋周日晚c2
Contest 1307:2023寒假早c2
Contest 1351:2024暑期246晚c2
Contest 1375:2024秋季c++周日早c2(塘下)
Contest 1413:平阳春季(数组)
Contest 1221:2023春周日c++三期
Contest 1317:2024春周六早下c++c2
Contest 1236:2023暑期135下午c++4期(塘下)
Contest 1242:2023暑期C++c2
Contest 1283:2023秋周六下c++c2
Contest 1290:2023秋周日早c++2
Contest 1329:2024春周日下c++c1