Find an element in array using MPI?

Question

The problem is find an element in array notifying other processors to stop. So, if the process has found the element others must end the search.

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localData = new int[sendcounts[rank]];
    MPI_Scatterv(data, sendcounts, displs, MPI_INT,localData,sendcounts[rank], MPI_INT, 0, MPI_COMM_WORLD);

    //FIND ELEMENT KEYNUMBER IN LOCALDATA
    for(int i=0;i<sendcounts[rank];i++) {
        cout<<"Index: "<<i<<endl;
        if(localData[i] == keyNumber){
            found = 1;
            //INVIA TROVATO
            for(int j=0;j<numprocs;j++){
                if(j!=rank){
                    MPI_Isend(&found,1,MPI_INT,j,10,MPI_COMM_WORLD,&request);
                    cout<<"inviato"<<endl;
                }
            }
            MPI_Wait(&request,&status);
            break;
        }
        MPI_Irecv(&foundReceived,1,MPI_INT,MPI_ANY_SOURCE,10,MPI_COMM_WORLD,&request);
        cout<<"Valore Found: "<<foundReceived<<endl;
        if(foundReceived == 1){
            cout<<"si";
            break;
        }
    }
    ......
    ....
    ..
    .