#include <cstrike> 

public OnPluginStart() HookEvent("player_say", Say);

public Say(Handle:event, const String:name[], bool:silent)   
{   
	decl String:text[5]; GetEventString(event, "text", text, 5); 
	new iTeam = GetClientTeam(GetClientOfUserId(GetEventInt(event, "userid")));	
	if(strcmp(text, "1") == 0 && iTeam > 1) 
	{ 
		CS_SetTeamScore(iTeam, CS_GetTeamScore(iTeam) + 1); iTeam = iTeam == 2 ? 7 : 8;
		CS_TerminateRound(5.0, CSRoundEndReason:iTeam, false); 	
	}   
}