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Original file line number	Diff line number	Diff line change
`@@ -1,7 +1,7 @@`
`1`	`1`	`# Forest for the trees`
`2`	`2`	`# https://open.kattis.com/problems/forestforthetrees`
`3`	`3`	`# Number-theory`
`4`		`-# 21/01/2025`
	`4`	`+# 21/01/2026`
`5`	`5`
`6`	`6`
`7`	`7`	`from math import gcd`

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`@@ -0,0 +1,10 @@`
	`1`	`+g=[0]*9`
	`2`	`+for _ in range(int(input())):`
	`3`	`+ i=0;w={"X":0,"O":0}`
	`4`	`+ for _ in range(3):`
	`5`	`+ for c in input():g[i]=c;i+=1`
	`6`	`+ try:input()`
	`7`	`+ except:0`
	`8`	`+ for i,j,k in[(0,1,2),(3,4,5),(6,7,8),(0,3,6),(1,4,7),(2,5,8),(0,4,8),(2,4,6)]:`
	`9`	`+ if g[i]==g[j]==g[k]and g[i]in"XO":w[g[i]]=1`
	`10`	`+ print("yes"if(d:=g.count("X")-g.count("O"))in(0,1)and not(w["X"]and w["O"])and((not w["X"]and d==0)or(not w["O"]and d==1))else"no")`

Lines changed: 5 additions & 1 deletion

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`@@ -1,3 +1,7 @@`
	`1`	`+# TicTacToe2`
	`2`	`+# https://open.kattis.com/problems/tictactoe2`
	`3`	`+# Game solving`
	`4`	`+# 31/01/2026`
`1`	`5`
`2`	`6`	`grid = ["" for _ in range(9)]`
`3`	`7`
`@@ -34,7 +38,7 @@`
`34`	`38`	`}`
`35`	`39`
`36`	`40`	`for i, j, k in lines:`
`37`		`- if grid[i]==grid[j]==grid[k] and grid[i] in "X0":`
	`41`	`+ if grid[i]==grid[j]==grid[k] and grid[i] in "XO":`
`38`	`42`	`wins[grid[i]] = True`
`39`	`43`
`40`	`44`	`# X wins`

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`@@ -1 +1,6 @@`
	`1`	`+# Take Two Stones`
	`2`	`+# https://open.kattis.com/problems/twostones`
	`3`	`+# Game solving`
	`4`	`+# 21/01/2026`
	`5`	`+`
`1`	`6`	`print("Alice" if int(input())%2 else "Bob")`

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`@@ -1,7 +1,7 @@`
`1`	`1`	`# Where is my internet`
`2`	`2`	`# https://open.kattis.com/problems/wheresmyinternet`
`3`	`3`	`# Union-find`
`4`		`-# 21/01/2025`
	`4`	`+# 21/01/2026`
`5`	`5`
`6`	`6`	`n, m = map(int, input().split())`
`7`	`7`

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