#include <sourcemod>
#include <cstrike>
public OnPluginStart()
{
HookEvent("round_end", OnRoundEnd);
}
public OnRoundEnd(Handle:event, const String:name[], bool:dontBroadcast)
{
for (new i=1;i<=MaxClients;i++) {
if (IsClientInGame(i) && GetClientTeam(i) == CS_TEAM_CT && GetClientFrags(i) >= 20)
CS_SwitchTeam(i, CS_TEAM_T);
}
}