constint MAXN = 5e5 + 5; usingnamespacestd;intn,a [MAXN]; intL [MAXN],R [MAXN]; //R [i]: 从i往前数第 a [i] 个 =a [i] 的位置（含i） // L [i]: 从i往前数第 a [i]+ 1个 =a [i] 的位置（含i） // 如果没有，都是- 1vector< int> pos[MAXN]; ...

AtCoder （ABC 444）于2月7日20:00进行。2月8日19:00清北OI金牌教研团进行了本次比赛的直播讲解。以下为本次比赛解题报告： intmain {string str;cin >> str; if( str[ 0] == str[ 1] && str[ 1] == str[ 2]) puts ( "Yes"); elseputs ( "No"); return0;} ...

A human programmer won a coding competition in Tokyo. An OpenAI tool took second place. Sam Altman and OpenAI congratulated the winner on X. "I'm trying to give 100% of what I have and try to stay ...

“人类暂时获胜了!”前OpenAI员工、波兰程序员Przemysław Dębiak在东京举办的AtCoder世界巡回赛2025启发式竞赛中，以微弱优势击败OpenAI定制模型后，在社交媒体上写下了这句既振奋又充满危机感的宣言。这场持续10小时的编程马拉松让他“精疲力尽，几乎虚脱”，却 ...

What happens when a machine almost outsmarts the world’s best coders? At the 2025 AtCoder World Finals, OpenAI’s secret internal AI model came astonishingly close to claiming victory in one of the ...

A Polish programmer running on fumes recently accomplished what may soon become impossible: beating an advanced AI model from OpenAI in a head-to-head coding competition. The 10-hour marathon left him ...

Amid the ongoing debate on AI vs humans at work, a new instance has been added favouring humans. A Polish programmer, Przemysaw Debiak aka Psyho, triumphed over an advanced AI model from OpenAI in a ...

At the 2025 AtCoder World Tour Finals’ Heuristic Challenge held in Tokyo, renowned coder Przemysław Dębiak — widely recognized in the programming world as “Psyho” and a former member of the OpenAI ...

At the AtCoder 2025 final, a programmer defeats an AI from OpenAI – for the first time - a narrow but symbolic victory for humans. At the AtCoder World Tour Finals 2025, Polish developer Przemysław ...